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veronicaleigh veronicaleigh
  • 28-06-2016
  • Mathematics
Answered

Using the rules for special cases, what is the result of (-2x+2)^2

Verified Answer :

Hanibal
Hanibal Hanibal
  • 28-06-2016

\((-2x+2)^2\)
We know that:
\(\left(a+b\right)^2=a^2+2ab+b^2\)
So:
\(=\left(-2x\right)^2+2\left(-2x\right)\cdot \:2+2^2\)
Now:
\(=\left(-2x\right)^2-2\cdot \:2x\cdot \:2+2^2\)
We apply the law of exponents and solve, so we get:
\(=4x^2-8x+4\)

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