Simplify the expression:
a.
b^2+49–(b–7)^2
b.
2a+6b)^2–24ab

Question

05-01-2019
Mathematics

contestada

Simplify the expression:
a.
b^2+49–(b–7)^2
b.
2a+6b)^2–24ab

Respuesta :

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dthomasspates dthomasspates · Answer 1 · 2019-01-05T00:33:16+01:00

dthomasspates dthomasspates

05-01-2019

part a b2+49−(b−7)2

Distribute:

=b2+49+−b2+14b+−49

Combine Like Terms:

=b2+49+−b2+14b+−49

=(b2+−b2)+(14b)+(49+−49)

=14b

Answer:

=14b
part b

(2a+6b)2−24ab

Distribute:

=4a2+24ab+36b2+−24ab

Combine Like Terms:

=4a2+24ab+36b2+−24ab

=(4a2)+(24ab+−24ab)+(36b2)

=4a2+36b2

Answer:

=4a2+36b2

Answer Link

Simplify the expression: a. b^2+49–(b–7)^2 b. 2a+6b)^2–24ab

Respuesta :

Otras preguntas

Simplify the expression:
a.
b^2+49–(b–7)^2
b.
2a+6b)^2–24ab