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
UNO [17]
1 year ago
13

Thu gọn biểu thức : (x-5)(x+5)-(x+1)^2

Mathematics
1 answer:
Kipish [7]1 year ago
5 0

(x-5)(x+5)-(x+1)^2\\=x^2 -25-(x^2+2x +1)\\=x^2 -25-x^2-2x -1\\=-2x-26

ANSWER: -2x -26

Ok done. Thank to me :3

You might be interested in
What choices are solutions for equation x^2-3x = -5/4
Kryger [21]

Here's the solution,

=》

{x}^{2}  - 3x =  -  \dfrac{5}{4}

=》

{x}^{2}  - 3x +  \dfrac{5}{4}  = 0

now, let's multiply the whole equation with 4

=》

4 {x}^{2}  - 12x + 5 = 0

=》

4 {x}^{2}  - 10x - 2x + 5= 0

=》

2x(2x - 5) - 1(2x - 5) = 0

=》

(2x - 1)(2x - 5) = 0

so,

Case 1. where, 2x - 5 = 0

=》

x =  \dfrac{5}{2}

case 2. where, 2x - 1 = 0

=》

x =  \dfrac{1}{2}

8 0
3 years ago
Which of the following lines is perpendicular to the line 8x + 6y = 12 and passes through the point (-12,-2)?​
VLD [36.1K]

Answer:

y = 3/4x + 7

Step-by-step explanation:

8x + 6y = 12

6y = -8x + 12

y = -4/3x + 2

Perpendicular slope: 3/4

y - y1 = m(x - x1)

y + 2 = 3/4(x + 12)

y + 2 = 3/4x + 9

y = 3/4x + 7

5 0
3 years ago
How Many Inches Are In 3yd 2ft ?
Phantasy [73]
2ft = 24 inches
3 yds = 6ft
6ft = 72 inches
24 plus 72 = 96
96 inches is your answer
3 0
3 years ago
What is the length of a segment with endpoints (2, 5) and (10, 11) *
yuradex [85]

Answer: 14 Units

Step-by-step explanation: Subtract (10-2) and (11-5)

4 0
3 years ago
Mr. Thompson wants to tile his living room which measures 15.7 feet in length and 12.2 feet in width. What is the area of Mr. Th
IRISSAK [1]

Answer:

A. 191.54 ft²

B. $2011.17

Step-by-step explanation:

Part A involves multiplying to find the area of the living room using the formula to find the area of a rectangle.

A = b*h (original formula)

A = 15.7*12.2 (substitute values)

A = 191.54 (multiply)

The area of his living room is 191.54 ft²

Next, you need to multiply the number of ft² by the cost per ft² to find the cost to tile the living room

Cost = $10.50*191.54 (equation)

Cost = $2011.17 (multiply)

The total cost of tiling the living room would be $2011.17

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the density of clay
    11·1 answer
  • Use a graphing calculator to solve the equation -3 cos t = 1 in the interval from 0 to 2pi. Round to the nearest hundredth.
    12·1 answer
  • Show that f is strictly monotonic on the given interval and therefore has an inverse function on that interval: f(x) = cot(x), (
    5·1 answer
  • A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 50% of this population prefers t
    9·1 answer
  • In a school, the ratio of teachers to girls is 1:7 while that of boys to girls is 3:4, If there are 280 girls in the school, wha
    9·1 answer
  • Hi I really need help with this lol. I'm doing Equations with special Cases lol​
    8·1 answer
  • What does y equal if x-y=3
    6·1 answer
  • Can someone help me with part b? I've been stuck on it for an hour :(
    9·2 answers
  • HELP PLEASE. BUT YOU HAVE TO EXPLAIN YOUR ANSWER. NO SEARCHING UP THE ANSWER AND ENTERING IT HERE (AS LONG AS YOU CAN EXPLAIN HO
    6·1 answer
  • 4.5/y=12.5/4<br><br><br> Solve for "y"
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!