What number should be added to the expression x2 + 10x to change it into a perfect square trinomial? A 5 B 10 C 25 D 100

asked Feb 17, 2018 135k views

1 vote

What number should be added to the expression x2 + 10x to change it into a perfect square trinomial?

A 5
B 10
C 25
D 100

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1 vote

Answer:

you should add 25

Explanation:

RMcGuigan answered Feb 17, 2018

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3 votes

C: 25 should be added;
the expression would become x^2 + 10x + 25, which can be factorised to (x + 5)^2

Bsvingen answered Feb 20, 2018

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