Evaluate 2x2 – 4y2 when x = 2 and y = – 3

-288

Step-by-step explanation:

2x² -4y²

when x = 2 and y = -3

substitute the value  x = 2 and y -3

2(2)² - 4(-3)²

2(4) ×  - 4(9)

8 × -36

-288

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10