Question

（4x+1)(-4x-1)-(2x-3)(2x+3)简便计算

（4x+1)(-4x-1)-(2x-3)(2x+3)简便计算

Answer 1

(4x+1)(-4x-1)-(2x-3)(2x+3)
=-(4x+1)²-(2x-3)(2x+3)
=-(16x²+8x+1)-(4x²-9)
=-16x²-8x-1-4x²+9
=-20x²-8x+8

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Answer 2

（4x+1)(-4x-1)-(2x-3)(2x+3)
=-(4x+1)^2-(4x^2-9)
=-(16x^2+8x+1)-4x^2+9
=-16x^2-8x-1-4x^2+9
=-20x^2-8x+8

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Answer 3

（4x+1)(-4x-1)-(2x-3)(2x+3)
=-(16x^2+8x+1)-(4x^2-9)
=-20x^2-8x+8

Answer 4

（4x+1)(-4x-1)-(2x-3)(2x+3)=-14x^2-1-4x^2+9=-18x^2-8

Answer 5

(4x+1)(-4x-1)-(2x-3)(2x+3)=-(4x+1)²-(2x-3)(2x+3)=-(16x²+8x+1)-(4x²-9)=-16x²-8x-1-4x²+9=-20x²-8x+8请点击下面的【选为满意回答】按钮.