2х-10=4х+2
2х-4х=10+2
-2х=12
х=-6
4x^2+3x-16x-12+3=0
4x^2-13x-9=0
D=<span><span><span><span><span>(<span>−13</span>)^</span>2</span>−<span><span>4·4</span>·<span>(<span>−9</span>)</span></span></span>=<span>169+144</span></span>=313=17,7
</span><span>x1=-(-13)+17,7/2*4= 30,7/8=3,8
X2=-(-13)-17,7/2*4=-4,7/8=-0,6
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