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If the quadratic equations, `a x^2+2c x+b=0a n da x^2+2b x+c=0(b!=c)` have a common root, then `a+4b+4c` is equal to: a. -2 b. -2 c. 0 d. 1

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RESONANCE DPP-JEE MAINS-All Questions
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  2. Number of integers satisfying the inequation (x^2-x-1)(x^2-x-7)<-5, ar...

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  3. If the quadratic equations, a x^2+2c x+b=0a n da x^2+2b x+c=0(b!=c) ha...

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  4. If the expression cos(x-(3pi)/2)+sing((3pi)/2+x)+sin(32pi+x)-18cos(19...

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  7. If 3sin^(-1)((2x)/(1+x^2))-4cos^(-1)((1-x^2)/(1+x^2))+2tan^(-2)((2x)/(...

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  8. Consider the inequations: ((x-4)^(2005)dot(x+8)^(2008)(x+1))/(x^(2006)...

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  9. 1.The slope of the normal at the point with abscissa x = -2 of the gra...

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  10. Consider the inequations: ((x-4)^(2005)dot(x+8)^(2008)(x+1))/(x^(2006)...

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  11. Number of points of non-differentiability of the function g(x) = [x^2...

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  12. If ' a ' is a natural number and ' b ' a digit such that (3a+2007)^2=4...

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  13. Let f(x)={(sinx^2)/xx!=0 0x=0, then f^(prime)(0^+)+(0^-) has the value...

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  14. Solve the inequality: 1<(3x^2-7x+8)/(x^2+1)lt=2

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  15. P ,Q have position vectors vec a&amp; vec b relative to the origin ...

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  16. Solution set of the inequation, (x^2-5x+6)/(x^2+x+1)<0 is x in (-oo,2)...

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  17. The vertices of a triangle are A(1,1,2),B(4,3,1)a n dC(2,3,5) . A vect...

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  18. If the points ((a^3)/(a-1),(a^2-3)/(a-1)),((b^3)/(b-1),(b^3-3)/(b-1))a...

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  19. Let f(x)= cosec 2x + cosec 2^2 x+ cosec 2^3 x+........+ cosec 2^n ,x ...

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  20. Let P a point on the line y=3x and Q lies on 2y+x=2 and the mid-...

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