八下计算题:x²+4x+4分之1-x²÷(x+1)²乘以x-1分之x²+3x+2
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![八下计算题:x²+4x+4分之1-x²÷(x+1)²乘以x-1分之x²+3x+2](/uploads/image/z/603164-20-4.jpg?t=%E5%85%AB%E4%B8%8B%E8%AE%A1%E7%AE%97%E9%A2%98%EF%BC%9Ax%26%23178%3B%2B4x%2B4%E5%88%86%E4%B9%8B1-x%26%23178%3B%C3%B7%EF%BC%88x%2B1%EF%BC%89%26%23178%3B%E4%B9%98%E4%BB%A5x-1%E5%88%86%E4%B9%8Bx%26%23178%3B%2B3x%2B2)
八下计算题:x²+4x+4分之1-x²÷(x+1)²乘以x-1分之x²+3x+2
八下计算题:x²+4x+4分之1-x²÷(x+1)²乘以x-1分之x²+3x+2
八下计算题:x²+4x+4分之1-x²÷(x+1)²乘以x-1分之x²+3x+2
x²+4x+4分之1-x²÷(x+1)²乘以x-1分之x²+3x+2
=(x+2)²(x+1)²分之(x+1)²-x²乘以x-1分之(x+1)(x+2)
=(x+2)²(x+1)²分之2x+1乘以x-1分之(x+1)(x+2)
=(x²-1)(x+2)分之2x+1