Question

Is 5 a solution to the equation 2x2 + 10 = 60?

Answer 1

Solution:

As per the problem given equation is,

$(\396.32 - \250) = \146.32$

$\Rightarrow 2 \times x^{2}-60+10=0$ (//substituting all at left)

$\Rightarrow 2 \times x^{2}-50=0$

$\Rightarrow 2 \times x^{2}=50$

$\Rightarrow x^{2}=\left(\frac{50}{2}\right)$

$\Rightarrow x^{2}=25$

So the value of x can be 5 and -5.

Hence one value of x can be 5 (proved).

Answer 2

Answer:

Yes.

Step-by-step explanation:

$2(5)^2+10=2(25)+10=50+10=60$