Ответ:
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6x+(3x-2)=14
6x+3x-2=14
9x=14+2
9x=16
x=16/9
x=1 7/9
8y-(7y-142)=51
8y-7y+142=51
y=51-142
y=-91
(6x+1)-(3-2x)=14
6x+1-3+2x=14
8x-2=14
8x=14+2
8x=16
x=2
(6-2x)+4=-5x-3
6-2x+4=-5x-3
-2x+10=-5x-3
-2x+5x=-3-10
3x=-13
x=-13/3
x=-4 1/3
(0,357)^0 = 1.
1^-4 = 1^4 = 1.
(1/4)^-2 = (4/1)^2 = 16/1 = 16.
Значит:
1+1-16 = -14.
√90+√10 = 3√10+√10 = 4√10