Evaluate 3x2 − x, if x = -4. Answer
(A) -52
(B) -44
(C) 44
(D) 52
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ganeshie8 (ganeshie8):
put x = -4
ganeshie8 (ganeshie8):
3x^2 - x
3(-4)^2 - (-4)
ganeshie8 (ganeshie8):
3(16) + 4
48 + 4
= ?
OpenStudy (anonymous):
um so whats the Answer lol Im lost
ganeshie8 (ganeshie8):
hmm add 4 to 48
its tough to explain :(
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myininaya (myininaya):
@ganeshie8 has done all of the work and has left one step for you @LAGIRL69
You can do 48+4
OpenStudy (vishweshshrimali5):
\(3x^2 - x = 3(-4)^2 - (-4) = 3 * 16 + 4 = ?\)
myininaya (myininaya):
If you have to just count from 4 units from 48
OpenStudy (anonymous):
@myininaya um 52?
myininaya (myininaya):
Right
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OpenStudy (vishweshshrimali5):
@myininaya
are u able to see my last answer in form of latex
OpenStudy (anonymous):
so @myininaya its -52 is the answer
OpenStudy (vishweshshrimali5):
i am asking this because I cannot........
OpenStudy (vishweshshrimali5):
@LAGIRL69
no
its 52 = 48 + 4
OpenStudy (vishweshshrimali5):
correct answer should be D
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myininaya (myininaya):
It is important to know order of operations on these
@LAGIRL69 I said "right" to your first answer
@vishweshshrimali5 no (and also I wanted her to say the final answer anyways :) )
OpenStudy (anonymous):
Ok so its D after i do all the Math thast what i find Its D?