Các câu hỏi tương tự
bài 1 rút gọn biểu thức
a) (2x-5)^2-4x(x+3)
b) (x-2)^3 -6(x+4)(x-4)-(x-2)(x^2+2x+4)
c)(x-1)^2-2(x-1)(x+2)+(x+2)^2+5(2x-3)
bài 2 rút gọn biểu thức
a)(2-3x)^2-5x(x-4)+4(x-1)
b)(3-x)(x^2+3x+9)+(x-3)^3
c)(x-4)^2(x+4)-(x-4)(x+4)^2+3(x^2-16)
Rút gọn A = 1/(x+1)(x+2)+1/(x+2)(x+3)+2/(x+3)(x+4)+4/(x+4)(x+5)+8/(x+5)(x+6)
Rút gọn
a) (x+2) .( x+3) - (x-2) .(x+5)
b) (8-5x).(x+2)+4(x-2).(x+1)+2.(x-2).(x+2)+10
c) 4.(x-1).(x+5)-(x+2)(x+5)-3.(x-1).(x+2)
d) (x-1).(x^5 + x^4 + x^3 + x^2 + x + 1)
Rút gọn các biểu thức sau:
a) 2x(x - 7) - (x + 3)(x - 2) - (x + 4)(x - 4)
b) (2x + 5)(x - 2) - 3(x + 2)2 + (x + 1)2
c) (x + 3)(x - 3) - (x + 5)(x - 1) - (x - 4)2
d) 2x(x + 1)2 - (x - 1)3 - (x - 2)(x2 + 2x + 4)
e) (x + 5)(x - 5)(x + 2) - (x + 2)3
Rút gọn biểu thức
A=(x-2)(x^2+2x+4)-(x+1)^3+3(x-1)(x+1)
B=(x^4-5x^2+25)(x^2+5)-(2+x^2)^3+3(1+x^2)^2
Rút gọn biểu thức
A=(x-2)(x^2+2x+4)-(x+1)^3+3(x-1)(x+1)
B=(x^4-5x^2+25)(x^2+5)-(2+x^2)^3+3(1+x^2)^2
Rút gọn: a)(x-3)(x+3)(x+2)-(x-1)(x² -3)-5x(x+4)²-(x-5)² b)2x(x-4)² -(x+5)(x-2)(x+2)+2(x+5)²-(x-1)² c)(x+5)²-4x(2x+3)²-(2x-1)(x+3)(x-3) Mn giúp mik vs.chiều nay 5h nộp bài rồi
Bài 19 Rút gọn
1) (x+2)^2+(3-x)^2
2) (4-x)^2 -(x-3)^2
3) (x-5)(x+5)-(x+5)^2
4) (x-3)^2-(x-4)(x+4)
5) (y^2 -6y+9)-(3-y)^2
6. (2x+3)² –(2x–3).(2x+3)
Bài 19 rút gọn
1) (x+2)^2+(3-x)^2
2) (4-x)^2-(x-3)^2
3) (x-5)(x+5)-(x+5)^2
4)(x-3)^2-(x-4)(x+4)
5) (y^2-6y+9)-(3-y)^2
6) (2x+3)^2-(2x-3)(2x+3)
1. Rút Gọn
a) -5x (x-3).(2x+4)-(x+3)(x-3)+(5x-2)(3x+4)
b) (4x-1)x(3x+1)-5x^2x(x-3)-(x-4)x(x-5)-7(x^3-2x^2+x-1)
c) (5x-7)(x-9)-(3-x)(2-5x)-2x(x-4)
d)(5x-4)(x+5)-(x+1)(x^2-6)-5x+19
e)(9x^2-5)(x-3)-3x^2(3x+9)-(x-5)(x+4)-9x^3
g) (x-1)^2 - (x+2)^2
Thanks mn nhiều ạ