Question

x(2x+5) = 25
pls answer fast​

Answer 1

Answer:

x =16

Step-by-step explanation:

x (2x+5) =25

4x+5x=25

x=25-9

x=16

Answer 2

Answer:

Question

$\sf \underline{solve \: the \: following \: to \: find \: the \: value \: of \: x }\\ \sf{ \to \: x \times (2x+5) = 25}$

Solution

$\sf{ \to \: x \times (2x+5) = 25} \\ \\ \sf{ \to \: 2 {x}^{2} + 5x = 25 } \\ \\ \sf \underline\color{grey}{solve \: the \: quadratic \: equation}$

$\sf{ \to \: 2 {x}^{2} + 5x - 25 = 0} \\ \\ \sf{ \to \: 2 {x}^{2} + 10x - 5x - 25 = 0} \\ \\ \sf{ \to \: 2x(x + 5) - 5(x + 5) = 0} \\ \\ \sf{\to \: (2x - 5)(x +5) = 0} \\ \\ \sf{ \to \color{pink} \: x = -5 \: or \: \frac{5}{2} }$

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