Các câu hỏi tương tự
1. cho x+y=7 va xy=8 gia tri cua bieu thuc x3+y3 = ?
2. gia tri lon nhat cua bieu thuc B= 1+3x-x2 la ?
1. cho x+y=7 va xy=8 gia tri cua bieu thuc x3+y3 = ?
2. gia tri lon nhat cua bieu thuc B= 1+3x-x2 la ?
chung minh gia tri cua bieu thuc sau ko phu thuoc vao gia tri cua bien
A=(x+2)(3x-1)-x(3x+3)-2x+7
B=( 2x-3 ) ( 2x+3 )-x( 3+4x )+3x+1
1.gia tri a de da thuc P(x)=3x3-8x2+6x-a chia het cho Q(x)=3x2-5x+1 la a =?
2.khi a+b=1 .gia tri nho nhat cua bieu thuc a3+b3+ab la?
3.tong cac gia tri cua x thoa man x5=x4+x3+x2+x+2 la?
tim gia tri x nguyen de bieu thuc (3x2-4x+x-1)/(3x+2) co gia tri nguyen
tim gia tri x nguyen de bieu thuc (3x3-4x2+x+1)/(x-4) co gia tri nguyen
chung minh rang cac bieu thuc sau khong phu thuoc vao gia tri cua bien x, biet B= x (x^3 + 2x^2 - 3x +2) - (x^2+ 2x) x^2 +3x ( x-1) +x-12
cmr gia tri cua bieu thuc khong phu thuoc vao gia tri cua bien
giúp mình nha đang cần gấp
y(x^2-y^2)(x^2+y^2)-y(x^4-y^4)
(1/3+2x)(4x^2-2/3x+1/9)-(8x^3-1/27)
(x-1)^3-(x-1)(x^2+x+1)-3(1-x)x
(3x-2y)^2+(3x+2y)^2-18x^2-8y^2+3
(-x-3)^3+(x+9)(x^2+27)+2019
tim gia tri cua x de bieu thuc co GTNN
a) 3x^2 - 6x - 1
b) ( x - 1)( x + 2 )( x + 3 )( x + 6 )
cho x+y =1 . tinh gia tri cua bieu thuc A=x^3+y^3+3xy
chox-y=1. tinh gia tri cua bieu thuc B=x^3-y^3-3xy
cho x+y=1 . tinh gia tri cua bieu thuc C=x^3+y^3+3xy(x^2+y^2)+6x^2*y^2(x+y)