Question

Expand each of the following expressions using algebraic identities:

a) (7x+9)²
b) (1-3x)²
c) (5x+8) (5x-8)​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Step-by-step explanation:

a) (7x + 9)^2

7x^2 + 2 × 7x × 9 + 9^2

49x^2 + 126x + 81

b) ( 1 - 3x)^2

1^2 - 2 × 1 × 3x + 3x^2

1 - 6x + 9x^2

c) (5x + 8)(5x - 8)

{(5x)^2 - (8)^2}

25x - 64

Hope it helps!!