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nordsb [41]
3 years ago
14

Anything helps ! Brainilest to right answer only .!

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
6 0

x = -16 or x = 5

Solution:

Given polynomial:

x^{2}+11 x-80=0

To find the roots of the polynomial.

Split the middle term 11x.

11x = 16x - 5x

x^{2}+11 x-80=0

x^{2}+16x-5x-80=0

(x^{2}+16x)+(-5x-80)=0

Take the x common in first 2 terms an -5 common in next 2 terms.

x(x+16)-5(x+16)=0

Take (x + 16) common in both terms.

(x+16)(x-5)=0

x + 16 = 0  or  x - 5 = 0

x = -16       or   x = 5

Hence x = -16 or x = 5.

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