Question

Efectuati:
a)(9x³y²-6x²y+12x²y²):3x²y+2(x+2y)=
b)(42x⁵+14x⁴-7x²+7x²):7x²-(25x⁵-15x⁵+10x³):5x³=
c)(2x³+3√3x²+x):x+(4√3x²-6√3x+7√3):√3+x²=

Answer 1

a)(9x³y²-6x²y+12x²y²):3x²y+2(x+2y)=
=3xy-2+4y+2x+4y=
=3xy-2+8y+2x

b)(42x⁵+14x⁴-7x²+7x²):7x²-(25x⁵-15x⁵+10x³):5x³=
=(42x⁵+14x⁴):7x²-(10x⁵+10x³):5x³=
=6x³+2x²-2x²+2=
=6x³+2

c)(2x³+3√3x²+x):x+(4√3x²-6√3x+7√3):√3+x²=
=2x²+3√3x+1+4x²-6x+7+x²=
=7x²+3√3x-6x+8