Question

(2x + 6)^2 - (2x-5)^2​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

(2x+6)^2-(2x-5)^2

={(2x)^2+2×2x×6+(6)^2}-{(2x)^2-2×2x×5+(5)^2}

=4x^2+24x+36-(4x^2-20x+25)

=4x^2+24x+36-4x^2+20x-25

=44x+11

=11(4x+1)