Question

Fill in the blanks:​

​​​​​​​(vii) $-5x\times -3x\times 5x^2=\underset{–}{}$
​

Answer 1

To find:$-5\times -3x\times 5x^2$

The multiplication of monomials can be performed by multiplication of their coeffficients and literals.

$\therefore -5\times -3x\times 5x^2$
$=(-5\times -3\times 5)\times (x\times x^2)$
$=75\times x^{1+2}$
$=75x^3$

Hence, $-5\times -3x\times 5x^2=75x^3$.