-(-7x+3.2y+8x^(3)) can be simplified by distributing the "-" sign as follows:
-(7x) - (3.2y) - (8x^(3))
This equals:
-7x - 3.2y - 8x^(3)
write an equivalent expression by distributing the "-" sign outside the parentheses: -(-7x+3.2y+8x^(3))
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