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4 years ago

11

BIG POINTSSimplify

^2-(m-5)^2" alt="(m+5)^2-(m-5)^2" align="absmiddle" class="latex-formula">

1 answer:

Natasha2012 [34]4 years ago

8 0

Answer:

20m

Step-by-step explanation:

(m+5)^2-(m-5)^2

FOIL

(m+5) (m+5)

m^2 +5m+5m+25

m^2 +10m +25

FOIL

(m-5) (m-5)

m^2 -5m-5m+25

m^2 -10m +25

Replace into the original equation

m^2 +10m +25 - (m^2 -10m +25)

Distribute the minus sign

m^2 +10m +25 - m^2 +10m -25

Combine like terms

20m

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