Have you never added fractions
3/8 + 1/12
you have to make the denominators even, so 24 is divisible by both
there for you make the denominators 24 and multiply the numerator by how many times the denominator had to be multiplied. so...
9/24 + 2/24
add them up and you get
11/24
Thats your answer
add me on snap Thumbs_R_Dumb
Ignore the -4y term for now. Only focus on x^2+20x+100. This can be factored to (x+10)^2. Notice how expanding it out gives
(x+10)^2 = (x+10)(x+10)
(x+10)^2 = x(x+10) + 10(x+10)
(x+10)^2 = x^2+10x + 10x + 100
(x+10)^2 = x^2 + 20x + 100
So this means
x^2+20x-4y+100 = 0
turns into
(x+10)^2 - 4y = 0
after we factor
The second equation listed above implies that we have a parabola because we can solve for y to get
-4y = -(x+10)^2
y = (1/4)(x+10)^2
Method used:-
Completing the square method.
Steps :-
Now, make the left hand side of the equation by adding the square of ½ to both sides of the equation.
Simplify the equation. You'll get a +ve & -ve value.
Simplify it further.
The solutions are :-
x = 0 & x = -1
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Hope it helps ⚜