All categories

4 years ago

Need help with factoring, x squared minus 8x +15

Mathematics

1 answer:

wariber [46]4 years ago

7 0

Answer:

(x-3)(x-5)

Step-by-step explanation:

X^2-8x+15

Break the expression into groups

(x^2-3x)+(-5x+15)

Factor out x from x^2-3x

Factor out -5 from -5x+15: -5(x-3)

=x(x-3)-5(x-3)

Factor out common term x-3

=(x-3)(x-5)

Thanks for letting me help!!

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The cosine law

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$\bf \textit{Law of sines}
\\ \quad \\
\cfrac{sin(\measuredangle A)}{a}=\cfrac{sin(\measuredangle B)}{b}=\cfrac{sin(\measuredangle C)}{c}\\\\
-------------------------------\\\\$

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4 years ago

Factor by grouping. 40p2 – 13p – 36

Serga [27]

Factor by regrouping:
40p^2 - 13p - 36

= 40p^2 - 13p -36

= (8p - 9)(5p + 4)

Regroup to: (8p - 9)(5p + 4)

Hope that helps!!!

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3 years ago

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Step-by-step explanation:

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