Question

For $p\left(x\right)=5x^2-\frac{2}{3}x+8$, then value of $p\left(3\right)=$

• A. $50$
• B. $51$
• C. $55$
• D. $35$

Answer 1

The correct option is B $51$

The polynomial given is $p\left(x\right)=5x^2-\frac{2}{3}x+8$ after substituting the value $x=3$ in the polynomial we get:

$p\left(3\right)=5x^2-\frac{2}{3}x+8=5(3{)}^2-(\frac{2}{3}\times 3)+8=(5\times 9)-2+8=45-2+8=53-2=51$

Hence, $p\left(3\right)=51$.