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3 years ago

Factoring quadratics

Mathematics

1 answer:

Sonja [21]3 years ago

3 0

Answer:

Step-by-step explanation:

by synthetic division

x+8=0

x=-8

-8| 1 -1 -72

| -8 +72

------------------

1 -9 | 0

x-9

width=x-9

or second method

x²-x-72=0

x²-9x+8x-72=0

x(x-9)+8(x-9)=0

(x-9)(x+8)=0

we know area of rectangle=length×width

if length=x+8

then width=x-9

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