Question

1) Calculati
2) Descompuneti in factor.


va rog rapiiiid

Answer 1

1.
a) a-3b+3a-b=a-b+ 3(a-b)=4(a-b)
b) (x+1)(x+4)=x^2 +5x+4
c) 2x^4 : x^2 = 2x^2
d) x^2y • (-2xy^2) = -2x^3 •y^3

2.
a) 2a+2b = 2(a+b)
b) x^2 - 10x +25=(x-5)^2
c) x^2 -25=(x-5)(x+5)
d) x^2 +3x+2 = x^2 +x+2x+2
= x(x+1) + 2(x+1)
= (x+1)(x+2)

Answer 2

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