Question

14. The two numbers are a and b. Here a>b.The Sum of two numbers is
12 and the product is 32.
A. Multiply with the help of formulae : (2x+3)(2x-7)
B. Find out the value of 2a²+2b².
C. Prove that, (a+2b)²–5b² = 176​

Answer 1

Step-by-step explanation:

14. a + b = 12

a× b = 32

so, a = 8

b = 4

A. ( 2x+3) (2x-7)

=> 2x ( 2x -7) +3 ( 2x -7)

=> 4x² - 14x + 6x - 21

=> 4x² - 8x - 21