Values of the Symmetric Expression of the Roots

IMPORTANT

Values of the Symmetric Expression of the Roots: Overview

This topic covers the values of symmetric expressions of the roots. We will also discuss some symmetric functions of roots. Furthermore, it gives the formulas to find the sum and product of roots of a quadratic equation.

Important Questions on Values of the Symmetric Expression of the Roots

EASY
IMPORTANT

If α,β are the roots of the quadratic equation ax2+bx+c=0, then  log1α2+log1β2  will be the symmetric function of roots.

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IMPORTANT

If A,B are the roots of the quadratic equation ax2+bx+c=0, then tan(A-B)  will be the symmetric function of roots.

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IMPORTANT

If α,β are the roots of the quadratic equation ax2+bx+c=0, then  logαβ  will be the symmetric function of roots.

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If α,β are the roots of the quadratic equation ax2+bx+c=0, then α2β5+β2α5  will be the symmetric function of roots.

MEDIUM
IMPORTANT

If α,β are roots of the quadratic equation ax2+bx+c=0, form an equation whose roots are α+β,αβ.

EASY
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If α, β are the roots of the quadratic equation ax2+bx+c=0 then the quadratic equation whose roots are α3, β3 is

EASY
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If α, β are the roots of ax2+bx+c=0 then the quadratic equation whose roots are 2α+3  and 2β+3 is

HARD
IMPORTANT

The quadratic equation whose roots are the x and y intercepts of the line passing through 1, 1 and making a triangle of area A with the axes may be-

MEDIUM
IMPORTANT

The equation whose roots are reciprocal of the roots of the equation 3x2- 20x+17=0 is -

HARD
IMPORTANT

If the roots of a1x2+b1x+c1=0 are α1, β1 , and those of a2x2+b2x+c2=0 are α2, β2 such that α1α2=β1β2=1 then-

MEDIUM
IMPORTANT

If α and β are roots of the equation ax2+bx+c=0, then roots of the equation a2x+12- b2x+13 - x+c3 - x2=0 are:

EASY
IMPORTANT

If  α , β be the roots of the equation ax2+bx+c=0, then roots of the equation ax+22+bx+2+c=0 are

HARD
IMPORTANT

If α β   but α 2 = 5 α - 3   and β 2 = 5 β - 3   then the equation whose roots are α β   and βα

HARD
IMPORTANT

Solve  2 5 log 1 0 x = 5 + 4 x log 1 0 5 .