SOLUTION: f(x) = 2x² + x - 5
replace x with 3
Can someone tell me do we multiply 2 by 3 first or after square root?
Thank you
Algebra ->
Square-cubic-other-roots
-> SOLUTION: f(x) = 2x² + x - 5
replace x with 3
Can someone tell me do we multiply 2 by 3 first or after square root?
Thank you
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Question 446291: f(x) = 2x² + x - 5
replace x with 3
Can someone tell me do we multiply 2 by 3 first or after square root?
Thank you Answer by nerdybill(7384) (Show Source):
You can put this solution on YOUR website! f(x) = 2x² + x - 5
replace x with 3
Can someone tell me do we multiply 2 by 3 first or after square root?
you really mean "square" as opposed to square root.
but, to answer your question, you apply the "order of operations" (PEMDAS)
exponents first...
.
f(x) = 2x² + x - 5
f(3) = 2*3² + 3 - 5
f(3) = 2*9 + 3 - 5
f(3) = 18 + 3 - 5
f(3) = 21 - 5
f(3) = 16
