Question

(75)^2-(70)^2=[(65)^2-(60)^2]×x. What is the value of x?

Answer 1

Answer:

x = 29/25

Step-by-step explanation:

(75)² -(70)² = [(65)² - (60)²] × x

Using a² - b² = ( a + b) (a - b) both sides to solve the squares

( 75 + 70) (75 - 70) = [ (65 + 60) (65 - 60) ] × x

145 × 5 = 125 × 5 × x

x = (145 × 5)/(125 ×5)

x = 29/25