什么是( - 6+ - 3) cdot(4- 3 cdot 2) div( - 2)?
3 -3的绝对值是3. -2的绝对值是2.让我们重写等式(-6 + 3)*(4-3 * 2)div(2)让我们解决LHS括号。 -6 + 3 = -3 -3 *(4-3 * 2)div(2)现在,中间括号。 4-3 * 2 你必须先乘以4-6 -2 -3 * -2div(2)6div2 3
你如何简化(1 / sqrt(a-1)+ sqrt(a + 1))/(1 / sqrt(a + 1)-1 / sqrt(a-1))div sqrt(a + 1)/( (a-1)sqrt(a + 1) - (a + 1)sqrt(a-1)),a> 1?
巨大的数学格式......>颜色(蓝色)(((1 / sqrt(a-1)+ sqrt(a + 1))/(1 / sqrt(a + 1)-1 / sqrt(a-1)) )/(sqrt(a + 1)/((a-1)sqrt(a + 1) - (a + 1)sqrt(a-1)))=颜色(红色)(((1 / sqrt(a-) 1)+ sqrt(a + 1))/((sqrt(a-1)-sqrt(a + 1))/(sqrt(a + 1)cdot sqrt(a-1))))/(sqrt(a) +1)/(sqrt(a-1)cdot sqrt(a-1)cdot sqrt(a + 1)-sqrt(a + 1)cdot sqrt(a + 1)sqrt(a-1)))= color(蓝色)(((1 / sqrt(a-1)+ sqrt(a + 1))/((sqrt(a-1)-sqrt(a + 1))/(sqrt(a + 1)cdot sqrt(a -1))))/(sqrt(a + 1)/(sqrt(a + 1)cdot sqrt(a-1)(sqrt(a-1)-sqrt(a + 1)))=颜色(红色) ((1 / sqrt(a-1)+ sqrt(a + 1))/((sqrt(a-1)-sqrt(a + 1))/(sqrt(a + 1)cdot sqrt(a-1) ))xx(sqrt(a + 1)cdot sqrt(a-1)(sqrt(a-1)-sqrt(a + 1))
你如何简化(x ^ 2 - 16)/(2x ^ 2 - 9x + 4)div(2x ^ 2 + 14x + 24)/(4x + 4)?
(2(x + 1))/((2x-1)(x + 3))通过分解注意:(x ^ 2-16)/(2x ^ 2-9x + 4)÷(2x ^ 2 + 14x +24)/(4x + 4)=((x + 4)(x-4))/((2x-1)(x-4))*(4(x + 1))/(2(x + 3)(x + 4))取消类似条款:(取消((x + 4))取消((x-4)))/((2x-1)取消((x-4)))*(取消( 4)颜色(蓝色)(2)(x + 1))/(取消(2)(x + 3)取消((x + 4)))=(2(x + 1))/((2x-1) )(X + 3))