Question

Show that =(3x+7)2-84x = (3x-7)2​

Answer 1

Answer:

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Step-by-step explanation:

3x^2+7x^2+2×3x ×7-84x = 3x ^2+7x^2-2×3x×7 9x^2+49x^2+42x-84 x= 9x^2 +49x^2-42x 9x^2+49x^2-42 = 9x^2+49 x^2- .

Answer 2

Answer:

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