W(x) = 3x³ - 2x² + x-1
V(x)= x² - 3
a)
W(x) - V(x)= 3x³ - 2x² + x-1 -( x² - 3 )=3x³ - 2x² + x-1 - x²+3 = 3x³ - 3x² + x+2
b)
W(x) ·V(x) =(3x³ - 2x² + x-1)(x² - 3)=3x⁵-9x³-2x⁴+6x²+x³-3x-x²+3
=3x⁵-2x⁴-8x³+5x²-3x+3
c)
2W(x) + 3 V(x)=2( 3x³ - 2x² + x-1)+3( x² - 3 )=
=6x³ - 4x² + 2x-2+3 x² - 9=
=6x³ -x²+2x -11
w(x) - v(x) = 3x^3-2x^2+x-1 -x^2+3 =3x^3-3x^2+x+2
w(x)*v(x) = (3x^3-2x^2+x-1)(x^2-3)=
=3x^5-9x^3-2x^4+6x^2+x^3-3x-x^2+3=
= 3x^5-2x^4-8x^3+5x^2-3x+3
2w(x)+3v(x) =6x^3-4x^2+2x-2+3x^2-9=
=6x^3-x^2+2x-11
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W(x) = 3x³ - 2x² + x-1
V(x)= x² - 3
a)
W(x) - V(x)= 3x³ - 2x² + x-1 -( x² - 3 )=3x³ - 2x² + x-1 - x²+3 = 3x³ - 3x² + x+2
b)
W(x) ·V(x) =(3x³ - 2x² + x-1)(x² - 3)=3x⁵-9x³-2x⁴+6x²+x³-3x-x²+3
=3x⁵-2x⁴-8x³+5x²-3x+3
c)
2W(x) + 3 V(x)=2( 3x³ - 2x² + x-1)+3( x² - 3 )=
=6x³ - 4x² + 2x-2+3 x² - 9=
=6x³ -x²+2x -11
a)
w(x) - v(x) = 3x^3-2x^2+x-1 -x^2+3 =3x^3-3x^2+x+2
b)
w(x)*v(x) = (3x^3-2x^2+x-1)(x^2-3)=
=3x^5-9x^3-2x^4+6x^2+x^3-3x-x^2+3=
= 3x^5-2x^4-8x^3+5x^2-3x+3
c)
2w(x)+3v(x) =6x^3-4x^2+2x-2+3x^2-9=
=6x^3-x^2+2x-11