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(7a + 3b)2 – (a – 2b)2 =ayuda pliz

answers: 1
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Answer:

(7a+3b)(2)−(a−2b)(2)

Distribute:

=(7a)(2)+(3b)(2)+−2a+4b

=14a+6b+−2a+4b

Combinar términos comunes:

=14a+6b+−2a+4b

=(14a+−2a)+(6b+4b)

=12a+10b

solución:

=12a+10b

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