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tìm x biếta,2x22+3(x-1)(x+1)5x(x+1)b,,(8-5x)(x+2)+4(x-2)(x+1)(2+x)(2-x)c,, 4(x-1)(x+5)-(x+2)(x+5)3(x-1)(x+2)
Đọc tiếp
tìm x biết
a,2x+3(x-1)(x+1)=5x(x+1)
b,,(8-5x)(x+2)+4(x-2)(x+1)=(2+x)(2-x)
c,, 4(x-1)(x+5)-(x+2)(x+5)=3(x-1)(x+2)
Bài 1:Thực hiện phép tính
a,(5-2x)(x+3)-4x(x+2) b,(3x+1)(x-3)-4(x+2)(x-2)
c,3(x-4)(x+3)+(x-5)(x+3) d,2x(x-4)+(3x-1)(2x-5)
Bài 2:Tìm x biết
a,5x(x+3)-(5x+2)(x+3)=7
b,(3x-1)(3x+2)-9(x+2)(x-2)=10
c,(x+1)(2x-5)+2(3-x)(x+2)=7
d,(1-3x)(x+2)+3x(x-5)=8
tìm x biết
a,5x(x-4)3(x+2)(x-4)=2x(x+1)
b,4x(x+2)-x(8x-5)=10
c,(x+3)(2x-5)=2x(x+4)
d,(3x-2)(x+5)-3x(x+4)=5
e,x(x-3)+2x(x+1)=3(x mũ2-4)
9 tháng 11 2021 lúc 20:25
Tìm x,biết
a) (x+2)^2(x-1)^2+(x-3)(x+3)= -8
b) 2021x(x-2020)-x+2020=8
Tìm x biết 2(x-5)(x+5)-(x+2)(2x-3)+x(x^2-8)=(x+1)(x^2-x+1)
b) 3(5/3x-7)-2(1.5x+6)-(5-x)(x+4)=80+x^2
c) 4/5x^2(x/3-1/2)-(1/5x-2/3)(4x^2/3+1)=22/45x^2
Tìm x biết 2(x-5)(x+5)-(x+2)(2x-3)+x(x^2-8)=(x+1)(x^2-x+1)
b) 3(5/3x-7)-2(1.5x+6)-(5-x)(x+4)=80+x^2
c) 4/5x^2(x/3-1/2)-(1/5x-2/3)(4x^2/3+1)=22/45x^2
Tìm x để B=3A,biếtA=\(\left(\frac{5+2\sqrt{6}}{\sqrt{3}+\sqrt{2}}+\frac{5-2\sqrt{6}}{\sqrt{3}-\sqrt{2}}\right)\) /\(\left(\frac{1}{2\sqrt{5}+3\sqrt{2}}-\frac{1}{2\sqrt{5}-3\sqrt{2}}\right)\)
B=\(\frac{2x^4-x^3+2x^2+x-4}{2x^3-x^2-2x+1}\)
Bài1:Rút gọn
a,(4x-5)(3x+2)-(7-3x)(x+2)
b,(-2x+1)(x-5)-3(x-2)(x+1)
c,(x^2-7)(x-5)+(3x^2+5)(2x-4)
d,(x^2+3x-2)(x+4)-4x(x-5)
Bài2:Tìm xbiết
a,(x-4)(x+3)-(x+1)(x-5)=8
b,(3x-2)(x+1)-3x(x+7)=13
c,(x+5)(x-5)-x(x+2)=9
d,(x-1)(x^2+x+1)-x(x^2-3)=1
Tìm x biết :
a) 3(5/3x-7)-2(1.5x+6)-(5-x)(x+4)=80+x^2
b) 4/5x^2(x/3-1/2)-(1/5x-2/3)(4x^2/3+1)=22/45x^2