(4x+3y-8z) + (7x-8y+5z) 4x+3y-8z 7x-8y+5z = 11x-5y-3z
(4x³+5x-7x²+9) + (6x³-4x+3x²-3) 4x³-7x²-5x+9 6x³+3x²-4x-3 = 10x³-4x²+x+6
=(8x² + 4x + 12) + (2x² + 7x + 10)
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(4x+3y-8z) + (7x-8y+5z)
4x+3y-8z
7x-8y+5z
= 11x-5y-3z
(4x³+5x-7x²+9) + (6x³-4x+3x²-3)
4x³-7x²-5x+9
6x³+3x²-4x-3
= 10x³-4x²+x+6
=(8x² + 4x + 12) + (2x² + 7x + 10)
=(8x² + 2x²) + (4x + 7x) + (12 + 10) =10x² + 11x + 22 =10x² + 11x + 22(15x² + 12xy + 20) – (9x² + 10xy + 5)=(15x² – 9x²) + (12xy – 10xy) + (20 – 5) =6x² + 2xy + 15
(x^4 − 2x² + 2) * (x² − 2x + 3) = x^6 − 2x^5 + 3x^4 − 2x^4 + 4x³ − 6x² + 2x² − 4x + 6= x^6 − 2x^5 − 2x^4 + 3x^4 + 4x³ + 2x² − 6x² − 4x + 6 = x^6 −2x^5 + x^4 + 4x³ − 4x² − 4x + 6