Answer fast question no 4
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2x^2-4x+5
sum= alpha + beta = 4/2=2
product = alpha x beta= 5/2
(alpha + beta)^2 - 2alpha.beta =alpha^2 + beta^2
2^2 -2 (5/2) = alpha^2 + beta^2
4-5 = alpha^2 + beta^2
-1 = alpha^2 + beta^2
sum= alpha + beta = 4/2=2
product = alpha x beta= 5/2
(alpha + beta)^2 - 2alpha.beta =alpha^2 + beta^2
2^2 -2 (5/2) = alpha^2 + beta^2
4-5 = alpha^2 + beta^2
-1 = alpha^2 + beta^2
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