construct quadratic equation,if the sum &product of the roots are 3&-2
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let α be 3 and β be -2.
sum=α+β=1
product=αβ=-6
Q.E=[x²-(sum)x+x]
=[x²-1x+(-6)
=x²-x-6
sum=α+β=1
product=αβ=-6
Q.E=[x²-(sum)x+x]
=[x²-1x+(-6)
=x²-x-6
yasummu:
Question: x^2 - 13x + 30 = 0 x^2 - 13x + 30 = 0; x^2 - 3x - 10x + 30 = 0; x(x - 3) - 10(x - 3) = 0 ; (x - 3)(x-10) = 0; (x - 3) =0 or (x-10 ) = 0; x = 3 or x =10.
thnxx more 2 questions are der
This is not a place to answer all the answer but still
sorry dear
but i really need dis answers for board
and i dnt hvae much pts to ask dis many questions
Question: 4x^2 - 16 + 15 = 0 4x^2/4 - 16x/4 + 15/4 = 0 ; x^2 - 4x + 15/4 = 0; x^2 - 2x(2) + (2)^2 - (2)^2 + 15/4 = 0; (x-2)^2 - 4 + 15/4 = 0; (x-2)^2 -(16+15)/4 = 0; (x-2)^2 -1/4 = 0; (x-2)^2 = 1/4; (x-2) = +or- under root of 1/4, (x-2) = +or- 1/2; x= 2 + 1/2 or x = 2 - 1/2
i do not know the last one now sorry
thank you u helped me
u r really genuis
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