Please Help!
evaluate the polynomial for x=5 and x=-5
3x^2-4x+7

Question

Please Help!
evaluate the polynomial for x=5 and x=-5
3x^2-4x+7

tkhunny · Answer

Rewrite your expression.  Everytime you start to feel like you want to write an 'x', write '5', instead.

anonymous · Answer

would it make it 15^2-20+7?

tkhunny · Answer

Pretty close, but remember to observe your Order of Operations.

$3\cdot5^{2} = 3\cdot (5^{2}) = 3\cdot 25 = 75$

Exponents go before multiplication.

anonymous · Answer

oh ok I thought it would be on the outside of ()

anonymous · Answer

thank you for 5=62 and for -5=102

tkhunny · Answer

Well, please never write "5 = 62" again.  What you mean is, the expression, when evaluated with x = 5, is 62.  You do NOT mean what you have written, 5 = 62.

anonymous · Answer

y just exhausted from all this math its never been easy for me i struggle badly