Subtract:
a2 + ab + b2 from 4a2 - 3ab + 2b2
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4a2 - 3ab + 2b2 - (a2 + ab + b2)
= 4a2 - 3ab + 2b2 - a2 - ab - b2
Arrange the polynomial with like terms together and combine them.
= (4a2 - a2) + (- 3ab - ab) + (2b2 - b2)
= 3a2 - 4ab + b2
Hence, 4a2 - 3ab + 2b2 - (a2 + ab + b2) = 3a2 - 4ab + b2.
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6a + 3 from a3 - 3a2 + 4a + 1
cab - 4cad - cbd from 3abc + 5bcd - cda
Take away - 3x3 + 4x2 - 5x + 6 from 3x3 - 4x2 + 5x - 6.
Take m2 + m + 4 from -m2 + 3m + 6 and the result from m2 + m + 1.