解(X+2)²+(3/4X+3/2)²=(5-X)²
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解(X+2)²+(3/4X+3/2)²=(5-X)²
解(X+2)²+(3/4X+3/2)²=(5-X)²
解(X+2)²+(3/4X+3/2)²=(5-X)²
原方程移项得:
(3/4X+3/2)²=(5-X)² - (x+2)²
即【(3/4)(X+2)】²=25-10x+x²-x²-4x-4
(9/16)(x²+4x+4)=21-14x
9x²+36x+36=336- 224x
9x²+260-300=0
(9x-10)(x+30)=0
解得:x=10/9或x=-30