1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
blondinia [14]
3 years ago
15

Simplify -3x^3(2x^2+3)+9x^4

Mathematics
1 answer:
SIZIF [17.4K]3 years ago
3 0

Answer:

ANSWER = −6x^5 +9x^4 − 9x^3

Step-by-step explanation:

Let's simplify step-by-step.

(−3x^3) (2x^2 + 3) + 9x^4

Distribute:

=(−3x^3) (2x^2) + (−3x^3) (3) + 9x^4

=−6x^5 + − 9x^3 + 9x^4


Answer:

= −6x^5 +9x^4 − 9x^3


You might be interested in
I’ll give you brainliest for the first person with an answer
raketka [301]

Answer:

1296mm^2

Step-by-step explanation:

Surface Area of the Rectangular Prism to the left on top of the box:

Area of square = lw, 9mm * 9mm = 81mm, then multiply by 2 because 2 of the squares are a part of the surface, giving <u>162mm^2</u>

Area of a rectangle =lw, 9mm * 9mm = 81mm, then multiply by 2 again, because 2 rectangles are a part of the surface, giving <u>162mm^2</u>

So, the total surface area of the rectangular prism to the left on top, is 324mm^2

Surface Area of the Triangular Prism:

Area of a triangle: 1/2bh, and our base length would be 12, because we have to subtract 9 from 21 since the base length of the triangle isn't stated. Anyways, A = 1/2bh, so A = 1/2(12)(9) = 54mm^2, but multiply by two, so we get <u>108mm^2</u>.

Area of the rectangle: lw, so 15mm * 9mm = <u>135mm^2</u>

So, the total surface area of the triangular prism is 243mm^2

Surface Area of the Rectangular Prism at the bottom:

Area of the long rectangles in front = lw, 21mm * 9mm = 189mm^2, multiply by 2, <u>378mm^2</u>

Area of the rectangles to the side = lw, 9mm * 9mm = 81mm^2, multiply by 2, <u>162mm^2 </u>

Area of the rectangle at the very bottom = lw, 21mm * 9mm = <u>189mm^2</u>

So, the total surface area of the rectangular prism at the bottom is 729mm^2

Add all the total surface areas of each shape to get the total surface area of the figure:

324mm^2 + 243mm^2 + 729mm^2 = 1296mm^2

The surface area of the figure above is 1296mm^2

<u />

4 0
2 years ago
Write the expression in expanded form that is equivalent to 3(7d +4e)
pickupchik [31]

Answer:

21+4

Step-by-step explanation:

3 times 7=21

3 times4=12

21d+4e

4 0
2 years ago
Read 2 more answers
Hello Can Someone Please Answer This Math Question
Brrunno [24]

Answer:

200 in^2

Step-by-step explanation:

5•4+10•4+10•5=

200 in^2

i hope this helped you

3 0
2 years ago
What does perimeter mean ?
PtichkaEL [24]
The distnace around a two dimensional shape
7 0
2 years ago
Read 2 more answers
Help with this question, its for an exam
padilas [110]
An equation is a statement that asserts the equality of two expressions, which are connected by the equals sign "=". The word 1234.
4 0
2 years ago
Other questions:
  • A parabola has a line of symmetry x = -5. The minimum value of the quadratic function that it represents is -7. Find a possible
    8·1 answer
  • 35 POINTS PLS HELP WITH MATH (I post this like 3 times so you can get extra points by answering it again ;-;)
    8·1 answer
  • Somebody help me please :'(
    13·1 answer
  • Anyone know the answer to this one? Thanks
    5·2 answers
  • Look at the graph of the function y = 5x. Which statement is true?
    5·1 answer
  • A tabletop in the shape of a trapazoid have an area of 6550 square centimeters. its longer base measures 115 centimeters, and th
    10·1 answer
  • 360 miles in 6 hours
    10·1 answer
  • 30 points! PLEASE HELP!!<br> please help me with these 5 math questions
    8·1 answer
  • Write this equation in standard form y=3x+10
    8·1 answer
  • Julia uses a scale to weigh three identical stacks of coins.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!