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July 1, 2015

Homework Help: maths(did i do this right)

Posted by britney on Monday, May 19, 2008 at 10:17am.

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

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