Question

if a -b equal to 7 and a * b is equal to 9 then a square + b square is equal to​

Answer 1

Answer:

If a-b = 7 and a*b = 9, then  a square + b square = 67

Step-by-step explanation:

(a-b)² = a² - 2 a * b + b² = 7²= 49

-> a² + b² = 40 + 2 * 9 = 67