=√9*3 + √4*3 + √25*3= 3√3+2√3+5√3=10√3
1. 5a - 2b - 3b + 4a= 9a - 5b
2. 6c - b - 2 - 3b= 6c - 4b - 2
3. 8x - 3x + 2y - 7y= 5x - 5y
4. 0,5a - 1,5b - 3b - 0,5a= -1,5b
Y=2*(-3)-4=-6-4=-10
y=2x-4 ,x=-3
(x-3)(x-3-√5)<0
x=3 x=3+√5
+ _ +
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3 3+√5
x∈(3;3+√5)