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Brrunno [24]
3 years ago
5

Select the polynomial that is a perfect square trinomial.

Mathematics
1 answer:
Andre45 [30]3 years ago
5 0
(a\pm b)^2=a^2\pm2ab+b^2


a)\ 49x^2-8x+16=(7x)^2-2\cdot x\cdot4+4^2-NOT\\\\b)\ 4a^2-10a+25=(2a)^2-2\cdot a\cdot5+5^2-NOT\\\\c)\ 25b^2-5b+10=(5b)^2-5b+10-NOT\\\\d)\ 16x^2-8x+1=(4x)^2-2\cdot4x\cdot1+1^2=(4x-1)^2-YES!

\text{Answer: d)}

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Points to remember

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