-2x^4 + 10x^3 - 21x^2 + 19x - 4
that should be the right answer
Answer:
See explanation, and ask for more details if unclear!
Step-by-step explanation:
The perfect square of this equation is
, since the square would be
. 1/4=4/16, meaning that you can set up the equation in the following way:


Take the square root of both sides:

Add 1/2 to both sides:
. Hope this helps!
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Answer:
y= 9
Step-by-step explanation:
4y-y+11=38
3y+11=38
3y= 38-11
3y= 27
y= 27/3
y=9
hope it helps ,pls mark me as brainliest
Answer:
−
4
x
^2
−
3
x
−
5
Step-by-step explanation: