41
3 times 9 is 27
27+14=41
Answer:
The length of each side of the base is 
Step-by-step explanation:
we know that
The area of a square is equal to

where
b is the length side of a square
In this problem we have

so
substitute in the formula

Square root both sides


Answer:
add 64 to both sides
Step-by-step explanation:
x = -26.3
I think x = 78
because 21/14 = 1.5
so x = 1.5*52
x = 78
answer: y= 2x^2+2x-4
steps:
y= (2x+4)(x-1)
*FOIL method* y= (2x^2-2x+4x-4)
*simplify* y= 2x^2+2x-4