Question

find the value of x = question is 5x=(45)^2-(40)^2

Answer 1

5x=2025-1600

5x=425

therefore,

x=85

Answer 2

Answer:

5x=(45)^2-(40)^2

here we can use identity a2 - b2 =  (a+b)(a-b)

therefore 5x = (45-40) (45+40)

                5x = (5) (85)

                 x = 5 X 85 / 5

                 x = 85

plz mark brainliest