<h2>♪Answer :</h2>
»(4x - 2y)(3x + 5y)
»4x(3x + 5y) + (-2y)(3x + 5y)
»12x² + 15xy - 6xy - 10y²
»12x² + 9xy - 10y²
so, ABC is :
x^2 = -25
there is a solution if you know imaginary numbers
if you do not stop now and say no solution
else
take the square root
x = sqrt (-25)
x =sqrt(-1) sqrt(25)
x=+- 5i
x = 5i, -5i
x^2 =18
take the square root of each side
x =+-sqrt(18)
x=+- sqrt(9)sqrt(2)
x=+- 3sqrt(2)
x=3sqrt(2), -3sqrt(2)
Quadratic
y = ax^2 + bx + d
c (x) = ax^2 + bx + d
c (3) = a (3^2) + b (3) + d
c (3) = 9a + 3b + d = 15.50
c (7) = a (7^2 + b (7) + d
c (7) = 49a + 7b + d = 23.50
c (12) = a (12^2) + b (12) + d
c (12) = 144a + 12b + d = 56
solve using simultaneous equations... to get a b and d
use that to solve for x = 5
hope this helps?
If a number has a decimal that is .5+, you round up. If it is .4-, you round down. So 817.502 would be 818.
Answer:
answer D 
Step-by-step explanation:
f(4)=16+6=22
g(4)=3*4*4+8=56
22*56=1232
