2x² + 4x + 4 + x² + 1 = 180

Rajquest asked Feb 25, 2022

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Rajquest asked Feb 25, 2022

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23 votes

Explanation:

$2 {x}^(2) + 4x + 4 + {x}^(2) + 1 = 180$

$3 {x}^(2) + 4x + 5 = 180$

${3x}^(2) + 25x - 21x - 175 = 0$

x * (3x + 25) - 7(3x + 25) = 0

(3x + 25) * (x - 7) = 0

3x + 25 = 0 = x - 7 = 0

x = - (25)/(3) = x = 7

$= x_(1) = - (25)/(3) . \: \: x_(2) = 7$

Mikebloch answered Mar 1, 2022

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