SOLUTION: Some problems i need help with 1:Factor out by GCF 4x^2 + 36y^2 2:Factor by grouping 3x^2 - 12x + 5x -20 3:Factor completely 9x^2 - 16y^2 4:factor completely 3x^2 - 2x

SOLUTION: Some problems i need help with 1:Factor out by GCF 4x^2 + 36y^2 2:Factor by grouping 3x^2 - 12x + 5x -20 3:Factor completely 9x^2 - 16y^2 4:factor completely 3x^2 - 2x - 8 5

Question 39363: Some problems i need help with
1:Factor out by GCF 4x^2 + 36y^2
2:Factor by grouping 3x^2 - 12x + 5x -20
3:Factor completely 9x^2 - 16y^2
4:factor completely 3x^2 - 2x - 8
5:Factor completely 3x^2 + 12x + 12
Thanks
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
1:Factor out by GCF 4x^2 + 36y^2
=4(x^2+9y^2)
2:Factor by grouping 3x^2 - 12x + 5x -20
=3x(x-4)+5(x-4)
=(x-4)(3x+5)
3:Factor completely 9x^2 - 16y^2
=(3x-4y)(3x+4y)
4:factor completely 3x^2 - 2x - 8
=3x^2-6x+4x-8
=3x(x-2)+4(x-2)
=(x-2)(3x+4)
5:Factor completely 3x^2 + 12x + 12
=3(x^2+4x+4)
=3(x+2)^2
Cheers,
Stan H.

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