solve the algebra questions
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9xsq- 15x+12x- 20
9xsq-3x-20
9xsq-3x-20
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(3x+4)(3x-5)
=3x(3x-5) + 4(3x-5)
=9x^2-15x+12x-20
=9x^2-3x-20
=9x^2+12x-15x-30
=3x(3x+4) - 5(3x+4)
=(3x-5)(3x+4)
3x-5=0..or..3x+4=0
3x=5..or..3x=-4
x=5/3..or..x=-4/3
=3x(3x-5) + 4(3x-5)
=9x^2-15x+12x-20
=9x^2-3x-20
=9x^2+12x-15x-30
=3x(3x+4) - 5(3x+4)
=(3x-5)(3x+4)
3x-5=0..or..3x+4=0
3x=5..or..3x=-4
x=5/3..or..x=-4/3
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