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March 30, 2017

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write 3x*2+8x-25 in the form a(x+h)*2+k where a,h and k are real numbers
formulae for h=b/2a
formulae for k=4ac-b^2/4a
h=8/2*3=1.33
4 (3)+ (-25)-8*2/4*3=-152/12=12.6
3(x-12.6)^2=1.33/3
x-12.6=+-0.67
x=0.67+3.55=4.22
x=-0.67+3.55=2.88

  • maths(did i do this right) - ,

    Correct.

  • maths(did i do this right) - ,

    Idon't know!!! that's tooo hard!!

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