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2 years ago

Which of the binomial below is a factor of this trinomial x^2-5x-14

Mathematics

2 answers:

erica [24]2 years ago

8 0

X^2-5x-14

x^2+2x-7x-14

x(x+2)-7(x+2)

(x-7)(x+2)

So (x-7) and (x+2) are factors of x^2-5x-14

PtichkaEL [24]2 years ago

7 0

Answer: x - 7

Step-by-step explanation:

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$\sf Since \;\sqrt{\boxed{64}}=\boxed{8}\;and\;\sqrt{\boxed{81}}=\boxed{9}\; \textsf{it is known that $\sqrt{75}$ is between}\\\\\sf \boxed{8}\;and\;\boxed{9}\;.$

Step-by-step explanation:

Perfect squares: 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, ...

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$\sf Since \;\sqrt{\boxed{64}}=\boxed{8}\;and\;\sqrt{\boxed{81}}=\boxed{9}\; \textsf{it is known that $\sqrt{75}$ is between}\\\\\sf \boxed{8}\;and\;\boxed{9}\;.$

See the attachment for the correct placement of $\sf \sqrt{75}$ on the number line.

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