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46=4(1-2X^2.)+X
We move all terms to the left:
46-(4(1-2X^2.)+X)=0
We calculate terms in parentheses: -(4(1-2X^2.)+X), so:We get rid of parentheses
4(1-2X^2.)+X
We multiply parentheses
-8X^2+X+4
Back to the equation:
-(-8X^2+X+4)
8X^2-X-4+46=0
We add all the numbers together, and all the variables
8X^2-1X+42=0
a = 8; b = -1; c = +42;
Δ = b2-4ac
Δ = -12-4·8·42
Δ = -1343
Delta is less than zero, so there is no solution for the equation
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