Question

Solve euation by using the quadratic formula

Answer 1

A=1 b=2
$a = 1 \\ b = 2 \\ c = - 35$
$\frac{ - b \pm \sqrt{{b}^{2} - 4ac} }{2a}$
$\frac{ - 2 \pm \sqrt{4 - 4(1)( - 35)} }{2}$
$\frac{ - 2 \pm \sqrt{144} }{2} = \frac{ - 2 \pm12}{2} = 5 \: or \: - 7$
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