Question

Plzzz answer this questions

Answer 1

Answer:

i) (x+3) (x+3)

= ( x+3)²

= (x)² + (3)² + 2×x×3

= x² + 9 + 6x

Step-by-step explanation:

iii) (2a-7) (2a-7)

= (2a-7)²

= (2a)² + (7)² - 2×2a×7

= 4a² + 49 - 28a

vii) (6x - 7) (6x + 7)

= (6x)² - (7)²

x) (7a - 9b) (7a - 9b)

= (7a - 9b)²

= (7a)² + (9b)² - 2×7a×9b

= 49a² + 81b² - 126ab

hope its helpful

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