Class 11 Mathematics 4-2.Quadratic Equations and Inequations Solution of quadratic equations and Nature of roots

Easy

If $f(x) = ax^{2} + bx + 2$ and $f(1) = 4, f(3) = 38$,then $a - b = $

MHT CET 2020 All MHT CET

A
$15$
B
$-2$
C
$2$
D
$8$

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Class 11

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4-2.Quadratic Equations and Inequations

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Solution of quadratic equations and Nature of roots

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