Answer:
Second option: 81y^4 - 16x^2, the difference of squares
Step-by-step explanation:
(9y^2-4x)(9y^2+4x) is a special product named difference of squares, then we can apply this formula:
(a-b)(a+b)=a^2-b^2, with a=9y^2 and b=4x, then:
(9y^2-4x)(9y^2+4x)=(9y^2)^2 - (4x)^2
(9y^2-4x)(9y^2+4x)=(9)^2 (y^2)^2 - (4)^2 (x)^2
(9y^2-4x)(9y^2+4x)=81y^(2*2) - 16x^2
(9y^2-4x)(9y^2+4x)=81y^4 - 16x^2
Answer:
its b because the answer for y needs to change in order for the x column to be true
Answer:
u can use "a squared + b squared = c squared"
in this case the two legs are 10 and 24 because they are near the right angle. the hypotenuse is always across from the right angle, so it's the long side that connects the two legs. Now you can plug in 10 and 24 for the pythagorean theorem and solve for the hypotenuse. that would be 10 squared plus 24 squared equal to c squared.
Answer:
Y=4x+4
Step-by-step explanation:
if it grows 4 inches each year that means it's the slope
and 4 feet tall model is the y intercept cuz its what you begin with
Answer:
x-intercept = -56
y-intercept = - 14
Step-by-step explanation:
x + 4y = -56
x- intercept :
y = 0
x + 4*0 = - 56
x-intercept = -56
y-intercept:
x=0
0 + 4y = - 56
4y = -56
y = - 14
y-intercept = - 14
