Answer:
x = 4
Step-by-step explanation:
4(2x+9) = 68
8x+36 = 68
8x = 68 - 36
x = 4
Answer:
(2,-2)
Step-by-step explanation:
Point A is 2 units to the right of the origin so the x coordinate is 2
It is also 2 units down so the y coordinate is -2
The point is (x,y) so A = (2,-2)
You can't solve it because it isn't equal anything
but we can factor
since the quadratic coefient (number in front of y^2 term) is 1
we can do this
for ax^2+bx+c
when a=1
what 2 numbers multiply to c and add to b
what 2 numbers multiply to -16 and add to -8
no numbers
if you had y^2-8y+16 then that would be (x-4)(x-4)
but no
ok, so we need to complete the squaer
so
y^2-8y-16
take 1/2 of linear coefient and square it
-8/2=-4, -4^1=16
add negative and poisitve to it
y^2-8y+16-16-16
factor
(y-4)^2-16-16
(y-4)^2-32
then we can force factor again
remember difference of 2 perfect square
a^2-b^2=(a+b)(a-b)
√32=4√2
so
(y-4)^2-(4√2)^2=(y-4+4√2)(y-4-4√2)
the factore form would be (y-4+4√2)(y-4-4√2)
not equal to anything tho so we can't solve
Answer:
Hello there! I believe b or d
