0
4X2 + 7X - 2 = 0
I am too lazy to use anything but the quadratic formula here!
X = - b (+/-) sqrt(b2 - 4ac)/2a
a = 4
b = 7
c = - 2
X = - 7 (+/-) sqrt[(72 - 4(4)(- 2)]/2(4)
X = - 7 (+/-) sqrt(49 + 32)/8
X = - 7 (+/-) sqrt(81)/8
X =[ - 7 (+/-) 9]/8
=====================so,
X = 1/4
=======and
X = - 2
=====
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