3 years ago

R^2+15r+56=0 Quadratics factoring

Mathematics

1 answer:

mylen [45]3 years ago

6 0

Step-by-step explanation:

Find the product, sum and factors which are P=56, S=15 and F=8,7 respectively.

r²+15r+56=0

replacing with the factors in the equation

=> r²+8r+7r+56=0

r(r+8)+7(r+8)=0

(r+8)(r+7)=0

=> r= –8 and –7

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