Factorize:
(i) 2x^2-x+1/8
(ii) a^2 + 7xy + 12y^2
(iii) 2x^4 - 7x^3 + 3x^2 + 63x - 45
2007-10-14 13:49:20 · 2 answers · asked by besst_gal 1 in Science & Mathematics ➔ Mathematics
for the first one:
multiply through by 8 to clear the fraction
16x^2-8x+1
=(4x-1)(4x-1)
=(4x-1)^2
for the second one:
you can't do much but set it equal to 0 and factor the one side
a^2+12y^2+7xy=0
a^2=-12y^2-7xy
a^2= -y(12+7x)
maybe a = sqrt(-y(12+7x)) but that's probably not neccesary
for the third one:
it really can't be factored without the aid of a calculator well it could but I don't have the time, so break out your calculator..
2007-10-14 14:05:05 · answer #1 · answered by golffan137 3 · 0⤊ 0⤋
(4x-1)(x/2-1/8)
a^2+ y(7x+12y)
2 irrational roots and two imaginary roots
2007-10-14 21:21:03 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋