Question

Is $x=\frac{5}{2}$ a solution of $(6x+16)(4x+10)=0$?

• A. Yes
• B. No
• C. Can't say
• D. None

Answer 1

The correct option is B No

Put $x=\frac{5}{2}$ in equation $(6x+16)(4x+10)=0$
$(6\times \frac{5}{2}+16)(4\times \frac{5}{2}+10)=(\frac{30}{2}+16)(\frac{20}{2}+10)$
$=(15+16)(10+10)$
$=\left(31\right)\left(20\right)\ne 0$
$\therefore x=\frac{5}{2}$ is not a solution of equation $(6x+16)(4x+10)$

Therefore, option $B$ is correct.