(x+8).(x-2y)=\(=x^2-2xy+8x-16y\)
\(=x^2+8x-2xy-16y\)
thiếu đề hay sao ý
(x+8).(x-2y)=\(=x^2-2xy+8x-16y\)
\(=x^2+8x-2xy-16y\)
thiếu đề hay sao ý
thuc hien phep tinh \(\frac{4x-8}{x+5}\)* \(\frac{25-x^2}{2x-x^2}\)
thuc hien phep tinh:3*x^2*(6*x^(n-3)+1)-2*x^n*(9*x^(n-3)-1)
Thuc hien phep nhan rut gon roi tinh gia tri bieu thuc
B)x(x^2-y)-x^2(x+y)+y(x^2-x) tai x=1/2 va y=-100
\(\frac{4x-8}{x+5}\)* \(\frac{25-^2}{2x-^2}\)thuc hien phep tinh nay ai giai giup mk vs
1) thuc hien phep tinh:
\(\frac{4}{x+2}+\frac{2}{x-2}+\frac{5x-6}{4-x}\)
thuc hien phep tinh:
(x+2)(1+x-x^2+x^3-x^4)-(1-x)(1+x+x^2+x^3+x^4)
Thuc hien phep tinh:
(163 - 642) :8
khong thuc hien phep tinh hay cm rang A chia het cho B biet rang
A=(x+1)(x+3)(x+5)(x+7)+15 va B = x+6
Thuc hien phep tinh
(x-\(\frac{1}{2}\))(2x-1)