Question

under the QUADRATIC EQUATION(Roots)
Find two numbers whose sum is 28 and whose product is 96.

Answer 1

from how many years you arent doing your hw?
just wondering..

Answer 2

just now. Because I totally not understand what my Prof teaches us

Answer 3

Consider what you know from what is given. Two numbers, X and Y.

Given:

X + Y = 28 and
X*Y = 96.

Pick one of the givens, solve for X or Y and then substitute into the other equation. That will get you started.

Answer 4

xy = 96

x + y = 28

Answer 5

substituing the eq1 into eq2
x = 96/y

x + y = 28
96/y + y = 28

96 + y^2 =28y
y^2 -28y +96 = 0
y = 24, y = 4

Answer 6

now substitute them in the eq1 to get 2 values