hohoho6 hohoho6

03-06-2018
Mathematics

contestada

if the roots of the equations(given in the picture as question no. 3) are simultaneously real then prove that b2=ac

if the roots of the equationsgiven in the picture as question no 3 are simultaneously real then prove that b2ac class=

Respuesta :

03-06-2018

Hi,
1) ax²+2bx+c=0 have real roots then (2b)²-4ac>=0 ==> 4b²>=4ac ==> b²>=ac
2) bx²-2√(ac)x+b=0 have real roots then
(-2√(ac))²-4b²>=0==> 4ac>=4b²==> ac>=b²
So b²>=ac>=b²==> b²=ac

Answer Link

Otras preguntas

how to get 85% of 1600

Why are the American people saying that since the 2020 election, American democracy is gone?

what is the irony of text lebanon's drinking water.

factorise 2y³+y²-2y-1please tell me fast

What’s the instrument of creating a discretionary trust in English law?

Mr. Smith takes his wife, his parents, and his x children to a seafood buffet. The price for the adult buffet is y. The price for the children's buffet is z. Se

Solve the following system of equations by elimination. Express the solution as an ordered pair (x,y). 3y+2x=6 5y-2x=10

what are types of adverb and given good example

8sin2θ+2sinθ−1=0 for all values of θ between 0∘ and 360∘.

Identify the simplest polynomial function having integer coefficients with the given zeros: 5, −2, 3