Math problem... PLEASE HELP!!!?

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1.) (-12.2)x4(x)
2.) -5/6 (-60/2) x^2
3.) -x^2 - x (2x-4)
* please show all the please and thank you so much!! :]]

2007-12-15 18:34:04 · 2 answers · asked by Clueless Person 1 in Science & Mathematics ➔ Mathematics

1) (-12.2)x4(x)=(-12.2)*(4)*x*x=-48.8x^2
2) -5/6(-60/2)x^2=(-5)(-60)x^2/6*2=300x^2/12=25x^2
3) -x^2-x(2x-4)=-x^2-2x^2+4x=-3x^2+4x

2007-12-15 18:49:03 · answer #1 · answered by reza 4 · 0⤊ 0⤋

1.
-12.2 x 4(x)
= -12.2 x 4x
= -48.8x

2.
-5/6 (-60/2) x^2
= -5/6 (-30) x^2
= 25x^2

3.
-x^2 - x (2x-4)
= -x^2 - 2x^2+4x
= -3x^2 + 4x
= x(4-3x)

2007-12-16 03:08:24 · answer #2 · answered by An ESL Learner 7 · 0⤊ 0⤋