SOLUTION: I need to simplify these problems. I thought that I did it right but was told that I was wrong. I really do not understand this at all. Thanks
a. 2x3+3x2 + 2x – 1
b. ax4 – bx2
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Question 202503: I need to simplify these problems. I thought that I did it right but was told that I was wrong. I really do not understand this at all. Thanks
a. 2x3+3x2 + 2x – 1
b. ax4 – bx2
c. 3a4 – 6a3 + 3a2
d. -4xyz
e. 3ab – 7cd + 5ac
f. 12x – 10x + 3
g. 3q2 – 4r2 + 6s2 – t2
h. –13x
i. 3xy + 4xz – 6yz + 1
j. 4x2 – x + 2x
k. x4 – x2y2 – x2y2 + y4
l. x3 – 3x +1
m. x – 7y2 +9x + 7y2
n. x + y
o. 4c6
Answer by jsmallt9(3758) (Show Source): You can put this solution on YOUR website!
If expressions like 2x3 mean , then all of these expressions are already simplified except: f, j, k and m. (Notice that I change all subtractions to additions. It helps avoid errors to do this.)
f. 12x – 10x + 3
12x and -10x are like terms so we can add them:
12x + (-10x) + 3 = 2x +3
j. 4x2 – x + 2x
-x and 2x are like terms so we can add them:
k. x4 – x2y2 – x2y2 + y4
and are like terms so we can add them:
m. x – 7y2 +9x + 7y2
x and 9x are like terms so we can add them. and are also like terms which we can add (and cancel out since they are opposites):
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