Question

3x^2 when x =7 How do I solve this? I forgot.

Answer 1

3(7)^2

Answer 2

3(7)^2 --> 3 x 49 --> 147...? is this the ans u want?

Answer 3

I just wanted to know how to evaluate it.

Answer 4

Please Excuse My Dear Aunt Sally
This is how I remember order of operation.
Parentheses, Exponent, multiplication, Division, Addition, Subtraction.

3(7)^2 can also be written 3*7^2

so first thing to do here is exponents:
7^2=49

our equation is now
3*49

now multiply and our final answer is:
147

Answer 5

:D Ok, I see. Thank you. :)