Help!! Simplify 7(A - 6).

Mathematics

1 answer:

Lyrx [107]3 years ago

4 0

Answer:

7 x A 7 x -6 = 7A - 42

Step-by-step explanation:

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Step-by-step explanation:

$2.\\(a-b)^2=a^2-2ab+b^2\\\\x^2-16x=-8\\\\x^2-2(x)(8)=-8\\\\\text{We have}\ 2ab=2(x)(8).\ \text{Therefore}\ b=8.\\\\x^2-2(x)(8)=-8\qquad\text{add}\ 8^2=64\ \text{to both sides}\\\\x^2-2(x)(8)+8^2=-8+64\\\\(x-8)^2=56$

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