Math, asked by akankshaakanksha3561, 5 months ago

hii everyone.....
evaluate each of the following using identities....
please tell me fast by step by step .....its urgent......

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Answered by nandnij486

1

Answer

(o) 3x+21x+28 ...

Answered by Anonymous

13

Answer:

$a \ - \: \: \: \: 3x {}^{2} + 12x - 21 x - 28$

$3 {x}^{2} - 9x - 28$

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