SOLUTION: Can someone please help me factorise the following
1) 18x^2-96x+128
2) 45y^4z-80y^2z^3
3) x^4+5x^3-7x^2-5x+6 given(x^2-1) is a factor.
Thank you very much
Question 481771: Can someone please help me factorise the following
1) 18x^2-96x+128
2) 45y^4z-80y^2z^3
3) x^4+5x^3-7x^2-5x+6 given(x^2-1) is a factor.
Thank you very much Found 2 solutions by stanbon, Vivek g:Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! factorise the following
1) 18x^2-96x+128
2[9x^2-48x+64]
2(3x-8)(3x-8)
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2) 45y^4z-80y^2z^3
5y^2z[9y^2-16z^2]
5y^2z(3y-4z)(3y+4z)
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3) x^4+5x^3-7x^2-5x+6 given(x^2-1) is a factor.
Using synthetic division:
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1)....1....5....-7....-5....6
.......1....6.....-1....-6..|..0
-1)....1.....5.....-6....|..0
Quotient: x^2+5x-6
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Factored Form: (x-1)^2(x+1)(x+6)
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Cheers,
Stan H.
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