Math, asked by rohankumar7050, 10 months ago

(5x-9)(5x+9)=
(7+12x)(7+12x)=

Answers

Answered by lakshmikrijnvb

4

Answer:

a. (5x)²-((9)²

25x²-81

b. (7+12x)²

7²+2×7×12x+(12x) ²

49+168x+144x².

mark me as brainliest answer.

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