Question

Rezolvati:
a)-2x(3xy-5y)=
b) (5x+3)^2=
c) (4a-y)(4a+y)=
d) (2x^2)^2 *14x^2=

Answer 1

a)-2x(3xy-5y)=-2x×3xy+2x×5y= -6x²y+10xy
b) (5x+3)^2=(5x) ²+ 2×5x×3+3²= 25x +30x+9
c) (4a-y)(4a+y)=(4x) ²-y²= 16x²-y
d) (2x^2)^2 *14x^2=4x⁴×14x²=56x^6

Answer 2

a) -6x^2y+10xy
b) 25x^2+2*3*5x+9 = 25x^2+30x+9;
c) 16a^2 - y^2;
d)4x^4*14x^2 = 46x^6;