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
jekas [21]
3 years ago
5

Answer these 2 questions if ur smart?!?!?

Mathematics
2 answers:
Mariulka [41]3 years ago
8 0

1. (4x+5y)(2x-3y)+3xy= 4x*2x-4x*3y+5y*2x-5y*3y+3xy=8x^2-12xy+10xy-15y^2+3xy= 8x^2+xy-15y^2

2. (2x^2+3)(4x+5)-8x(x^2-2)=2x^2*4x+2x^2*5+3*4x+3*5-8x*x^2+8x*2=

=8x^3+10x^2+12x+15-8x^3+16x=

=10x^2+28x+15

Aleks [24]3 years ago
8 0

Answer:

1. 8x^2+xy-15y^2           2. 10x^2 + 28x + 15

Step-by-step explanation:

For Question 1:

(4x + 5y) (2x - 3y) + 3xy

= 8x^2 - 12xy + 10xy - 15y^2 + 3xy

=8x^2+xy-15y^2       (cannot simplify any further)

For Question 2:

(2x^2 + 3)(4x +5) - 8x(x^2 -2)

=8x^3 + 10x^2 + 12x + 15 - 8x^3 + 16x

=10x^2 + 28x + 15         (cannot simplify any further)

You might be interested in
2(1 – x) > 2x HELP ASAP!!! I CANT FIGURE THIS OUT
katrin [286]
<h3>Answer:  x < 1/2</h3>

This is the same as saying x < 0.5 since 1/2 = 0.5

====================================================

Work Shown:

2(1-x) > 2x

2*1 + 2*(-x) > 2x ..... distribute

2 - 2x > 2x

2 > 2x+2x .... adding 2x to both sides

2 > 4x

4x < 2 ..... flip both sides; flip the inequality sign

x < 2/4 ..... dividing both sides by 4; see note below

x < 1/2

Note: We do not flip the inequality sign here because we are dividing both sides by a positive value. The inequality sign would only flip if you divide both sides by a negative number.

4 0
3 years ago
Help!!!
o-na [289]

Answer:

A. 2 cm long

Step-by-step explanation:

The there would be more squares cut out, the squares are smaller and its all even

6 0
3 years ago
Read 2 more answers
If x = 9 units and h = 4 units, then what is the area of the triangle shown above?
Aleks04 [339]

Answer:

18

Step-by-step explanation:

The area of triangle is b*h/2

so it will be 36/2 which will be 18

Please mark as Brainliest

7 0
2 years ago
How to simplyfy 2x+2x
VladimirAG [237]

Answer:

Your answer is 4x.

Step-by-step explanation:

Add 2+2

Combine your x's (like terms)

then you got 4 from 2+2

Add the leftover x so it makes 4+x then add it will give you 4x.

4 0
2 years ago
Find the x-intercept and y-intercept of the line.
Mice21 [21]

5y = 6x + 21 \\ y =  \frac{6}{5} x + \frac{21}{5}

y intercept:

y =  \frac{21}{5}

7 0
3 years ago
Other questions:
  • Please help me, someone!
    13·1 answer
  • In a 30-60-90 triangle, the hypotenuse is the shorter leg times the square root of two.
    11·2 answers
  • Solve log8(x+2)-log8(x-1)=2/3
    12·1 answer
  • Write 8 is the whole number 11 is the <br>numerator and 20 is the denominator ​
    10·1 answer
  • Total of 49 1/4 + 3 3/8?
    11·1 answer
  • The original price of a mountain bike was reduced by $125.
    7·2 answers
  • Pythogorean theorem ​
    9·1 answer
  • What is 342.5752 divided by 4
    5·2 answers
  • 3( x - 2 ) + 2 (4x - 1)
    10·1 answer
  • 2. What is the slope of the line 2x + y = 8?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!