Question

Add : 4x (5 – x ) and 6x2

– 30x
Pls fast ⚡​

Answer 1

$\implies4x(5-x)+{6x}^{2}-30x=0$

$\implies \: 20x - {4x}^{2} + 6x^{2} - 30x = 0$

$\implies 2 { x}^{2} - 10x = 0$

$\implies \: 2x(x - 5) = 0$

$\implies \: x - 5 = 0$

$\implies \: x = 5$

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