Answer:
2 roots in every case, not all are real.
Step-by-step explanation:
All of these equations are quadratic equations (degree 2). Every quadratic has two roots. They may be identical (looks like 1 root), and they may be complex (zero real roots), but there are always 2 of them.
a) the y-value of the vertex is negative and the parabola opens downward (leading coefficient -5), so there are no real zeros and both roots are complex.
b) each binomial factor contributes a root. Both roots are real.
c) the discriminant is positive, (3²-4·2·1=1), so both roots are real.
567 square mm
because 27*7 is 189 an times 3 because each side has 3 sides so it equals to 567 square mm! :)
Answer:
x=-1
Step-by-step explanation:
-4(-5x+2)-3x-5=-30
open the bracket
+20x-8-3x-5=-30
collect like terms
20x-3x-8-5=-30
17x=-30+13
17x= - 17
divide both sides by 17
x= -1
Answer:

Given:

To Find:
Value of f(x) when x = -3
Step-by-step explanation:
