Question

which second-degree polynomial function f(x) has a lead coefficient of 4 and roots 5 and 3

A:f(x)=4x^2+7x+10
B: f(x)=4x^2+28x+40
C: f(x)=4x^2-7x+10
D: f(x)=4x^2-28x+40

Answer 1

What do you think?

Answer 2

All of them are second-degree polynomial, 'squared', has a lead coefficient of '4'x^2

Answer 3

You will need to find the equation using the roots 5 and 3

Answer 4

i think that its c

Answer 5

Nope

Answer 6

then its A?

Answer 7

Are you sure the roots are 5 and 3? Because there is no correct answer

Answer 8

I'm using a quadratic equation calculator http://www.1728.org/quadratc.htm
and the roots I get are either 5 and 2 OR -5 and -2 for equations B and D

Answer 9

Yeah

Answer 10

5 and 2 my bad

Answer 11

Then it is equation D right?

Answer 12

i think