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Helppp me with this math problem

Helppp Me With This Math Problem class=

Sagot :

Nikeon202idn

Answer:

x=10 yards

Step-by-step explanation:

66=(x+12)(x-7)

66=x²-7x+12x-84

66=x²+5x-84

0=x²+5x-84-66

0=x²+5x-150

0=(x+15)(x-10)

x+15 = 0 or x-10=0

x=-15 or x=10

It can't be -15 as both sides would have negative lengths which is impossible so it has to be 10.

x+12 = 10+12 =22

x-7 = 10-7 = 3

22*3 = 66

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