Evaluate:
-7x2 + 18x2 + 3x2 - 5x2
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Arrange the polynomial with like terms together and combine them.
= (-7x2 + 18x2) + 3x2 - 5x2
= (11x2 + 3x2) - 5x2
= (14x2 - 5x2)
= 9x2
Hence, -7x2 + 18x2 + 3x2 - 5x2= 9x2
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Write the coefficient of:
8 in a2 - 8ax + a
4xy in x2 - 4xy + y2
Evluate:
b2y - 9b2y + 2b2y - 5b2y
abx - 15abx - 10abx + 32abx