Answer:
YES IT IS A PERFECT SQUARE
Step-by-step explanation:
equate the equation to zero
x^2+8x+16=0
c is the product while the coefficient of b is the sum
P=16
S=8
find a pair of numbers that the product is 16 and the sum is 8
the numbers are (4,4)
(x^2+4x) (4X+16)
ignore 8x and arrange as shown above
then bracket the equation
x(x+4)+4(x+4)
you simplify and remain with (x+4) (x+4)
having similar roots making it a perfect square
Answer:
The second picture
hope this helps
have a good day :)
Step-by-step explanation:
So we need to represent the problem using an equation
900 = the original pile of bricks (x) + 25% more - 40% (original + 25% extra)
900 = x + .25x - .4(x + x*.25)
900 = x + .25x - .4x - .1x
900 = .75x
x = 1200
To make the equation equal y
x=(y-5)^2
√x=√(y-5)^2
√x=y-5
this is because the 'root' cancels the 'square root'
√x=y-5
√x+5=y
4000.0093979 = 63.2456275
-15999998
= 8.7
Then you get 50