Discriminant of a quadratic equation can be calculated as:
Discriminant = b² - 4ac
b = coefficient of x term = 2
a = coefficient of squared term = 1
c = constant = 7
So,
Discriminant = 4 - 4(1)(7) = -24
So, the correct answer to this question is option C
Answer:
-7
Step-by-step explanation:
-12x = 84
/-12 /-12
x = -7
Answer:
Step-by-step explanation:
-2x=10-3(2x+6) next step is to distribute -3 in the parenthesis,
-2x=10-6x-18
Answer:
296
Step-by-step explanation:
8 plants × 37 on each = 296 cucumbers
By definition,
f'(x)=Lim h->0 (f(x+h)-f(x))/h
We are already given
f(x+h)-f(x)=<span>−6hx2−7hx−6h2x−7h2+2h3=h(-6x^2-7x-6hx-7h+2h^2)
divide by h
</span>(f(x+h)-f(x))/h =h(-6x^2-7x-6hx-7h+2h^2)/h=(-6x^2-7x-6hx-7h+2h^2)
Finally, take lim h->0
f'(x)=Lim h->0 (f(x+h)-f(x))/h=(-6x^2-7x-0-0+0)=-6x^2-7x
=>
f'(x)=-6x^2-7x
