Question

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x 2 + 2x - 143=0(Quadratic formula method​

Answer 1

Answer:

here is the answer of the question

Step-by-step explanation:

hope hope this will help you

x=11,-13

Answer 2

Answer:

Step-by-step explanation:

$x^{2} + 2x - 143$ = 0

a = 1

b = 2

c = -143

Quadratic formula is $x_{1} = \frac{-b + \sqrt{(b^{2} - 4ac)} }{2a}$, $x_{2} = \frac{-b - \sqrt{(b^{2} - 4ac)} }{2a}$

Hence $x_{1}$ = $\frac{-2 + \sqrt{4 + 572} }{2}$ = $\frac{-2 + \sqrt{576} }{2}$ = $\frac{-2 + 24 }{2}$ = 11

Hence $x_{2}$ = $\frac{-2 - \sqrt{4 + 572} }{2}$ = $\frac{-2 - \sqrt{576} }{2}$ = $\frac{-2 - 24 }{2}$ = -13

Hence $x^{2} + 2x - 143$ = (x - 11)(x+13)

And the roots of $x^{2} + 2x - 143$ are $\alpha = 11 \ and \ \beta = -13$.

Hoping that I have not made any mistakes, You're welcome.

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