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3 years ago

Is my answer correct. If not, what is the answer ? Thank you

Mathematics

1 answer:

kirill115 [55]3 years ago

8 0

Answer:

P = 3

Q = -4

R = 22

Step-by-step explanation:

Expand both sides and compare coefficients.

5Px^2 -PQx +10x -2Q = 15x^2 + Rx +8

Compare coefficients of x^2

5P = 15 => P = 3

Compare constant terms

-2Q = 8

Q = -4

Compare coefficients of x

-PQ + 10 = R

-(3)(-4) + 10 = R

R = 10 + 12 =22

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