2 years ago

What number should be added to the expression x^2 + 2x to change it into a perfect square trinomial?

1 answer:

6 0

$The\ perfect\ scuare:(a+b)^2=a^2+2ab+b^2\\------------------\\\\x^2+2x\to a=x;\ 2ab=2xb\to b=1\\\\therefore\\\\x^2+2x\cdot1+1^2=x^2+2x+\boxed{1}\leftarrow\boxed{A}$

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bekas [8.4K]

She will spend $74.25 on gas.

Step-by-step explanation:

Given,

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Keywords: unit rate, conversion

Learn more about conversion at:

#LearnwithBrainly

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