7x^2=5x 1.7x^2=5x2.y^2-15y+26=03.(2x-1)^2=(3-x)^2从第五题开始,用因式分解法解答.

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7x^2=5x1.7x^2=5x2.y^2-15y+26=03.(2x-1)^2=(3-x)^2从第五题开始,用因式分解法解答.7x^2=5x1.7x^2=5x2.y^2-15y+26=03.(2x-

7x^2=5x 1.7x^2=5x2.y^2-15y+26=03.(2x-1)^2=(3-x)^2从第五题开始,用因式分解法解答.
7x^2=5x
1.7x^2=5x
2.y^2-15y+26=0
3.(2x-1)^2=(3-x)^2


从第五题开始,用因式分解法解答.

7x^2=5x 1.7x^2=5x2.y^2-15y+26=03.(2x-1)^2=(3-x)^2从第五题开始,用因式分解法解答.
7x=5
x=7/5
1 -13
1 -2
{y-13}(y-2)=0
x^2-x-6+6x-2x=0
x^2+5x-6=0
1 6
1 -1
(x+6)(x-1)