Rozwiąż przykłady:
a) -7(x+11)=4x+3
b) 18x= -(5-x)
c) 8x+11=(x+3)^2
d) 3x+7=4(x-11)
proszę o pomoc :):)
-7x-77=4x+3
-7x-4x=3+77
-11x=80/(-11)
x=-7 3/11
18x=-5-x
18x-x=-5
17x=-5/17
8x+11=x²+6x+9
8x-6x-x²=9-11
2x-x²=-2
3x+7=4x-44
3x-4x=-44-7
-x=-51/(51-1)
x=
a) -7x-77= 4x+3 -74= -3x /: (-3) x=242/3
b) 18x= -5+x 17x = -5 /: 17 x= -5/17
c) 8x+11=(x+3)*(x+3) 8x+11=x^2+3x+3x+9 8x+11=x^2+6x+9 8x-6x= x^2+9-11 2x=x^2-2 /:2 x=x^2 x^3
d)3x+7=(4x-44)*2 3x+7=8x-88 96=5x /:5 x=191/5
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a) -7(x+11)=4x+3
-7x-77=4x+3
-7x-4x=3+77
-11x=80/(-11)
x=-7 3/11
b) 18x= -(5-x)
18x=-5-x
18x-x=-5
17x=-5/17
c) 8x+11=(x+3)^2
8x+11=x²+6x+9
8x-6x-x²=9-11
2x-x²=-2
d) 3x+7=4(x-11)
3x+7=4x-44
3x-4x=-44-7
-x=-51/(51-1)
x=
a) -7x-77= 4x+3 -74= -3x /: (-3) x=242/3
b) 18x= -5+x 17x = -5 /: 17 x= -5/17
c) 8x+11=(x+3)*(x+3) 8x+11=x^2+3x+3x+9 8x+11=x^2+6x+9 8x-6x= x^2+9-11 2x=x^2-2 /:2 x=x^2 x^3
d)3x+7=(4x-44)*2 3x+7=8x-88 96=5x /:5 x=191/5