Question

Not sure how to go about this

Answer 1

hoping the equation wasn't cut off. from what i see it started at 1/2.

-3

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• Work

`\left(4\right)^2=16\\=(1)/(2)\cdot \:16-2\left(4\right)-3\\=(1)/(2)\cdot (16)/(1)\\=(1\cdot \:16)/(2\cdot \:1)\\=(16)/(2)\\(16)/(2)=8\\=8-2\left(4\right)-3\\2\left(4\right)\\2\cdot \:4 = 8\\=8-8-3\\8-8=0\\0-3\\= -3`

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Hope this helps!