(﹣x+2x²+5)+(4x²-3-6x)
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(﹣x+2x²+5)+(4x²-3-6x)
(﹣x+2x²+5)+(4x²-3-6x)
(﹣x+2x²+5)+(4x²-3-6x)
(﹣x+2x²+5)+(4x²-3-6x)
=-x+2x²+5+4x²-3-6x
=6x²-7x+2
(﹣x+2x²+5)+(4x²-3-6x)
(﹣x+2x²+5)+(4x²-3-6x)
(﹣x+2x²+5)+(4x²-3-6x)
(﹣x+2x²+5)+(4x²-3-6x)
=-x+2x²+5+4x²-3-6x
=6x²-7x+2