Question 229382
It makes a lot of difference
(7x)^2 is actually 7^2*x^2 = 49x^2, whereas 7x^2 is just that
:
3x to the fifth, times (-7x) squared
:
{{{3x^5 * (-7x)^2}}}
square both terms inside the brackets
{{{3x^5 * -7^2 * x^2}}}
:
{{{3x^5 * 49 * x^2}}}
:
{{{3*49 * x^(5+2)}}}; add exponents when you multiply
:
{{{147*x^7}}}