Question

Find x:11x2 +154x-1617

Answer 1

Answer:

Step-by-step explanation:

11x²+154x-1617

x²+14x-147(dividing the equation by 11)

x²+21x-7x-147

x(x+21)-7(x+21)

(x-7)(x+21)

x=7 or  x= -21

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Answer 2

11x2+154x-1617=0

==> 11x2+231x-77x-1617=0

==> 11x(x+21)-77(x+21)=0

==> (x+21)(11x-77)=0

If x+21=0,

x= -21

Or

If 11x-77=0

11x=77

x=77/11=7

So, the answer is -21 and 7.

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