2x^2-3x+9 simplify when

x= -7

Question

2x^2-3x+9 simplify when

x= -7

directrix · Answer

2 (-7 )^2  -  3(-7)  -  3(-7)  + 9 =
@ eedmond --> Post what you get when you do the operations above. Then, I'll check.

anonymous · Answer

149

accessdenied · Answer

2x^2-3x+9         
2(-7)^2 - 3(-7) + 9    (plug in -7 for x)
2(49) + 21 + 9           order of operations, exponents and multiplication
98 + 30                    more multiplication + adding the like terms
128                         adding like terms again

anonymous · Answer

lol  yea i end up adding 3 times 7 twice instead of once i se that now thank you though

directrix · Answer

@ eedmondson1 --> I caused you to mess up by writing a factor twice. Sorry. On the positive side, you did perform the calculations correctly.