I thinks 5 because -2(x) = -2x and -2(5)=-10
So -2x=-10
-10/-2=5
X=5
Answer:
She didn't put the sign's in the proper place, it should be ( x + 3 ) ( x - 7 )
Step-by-step explanation:
( x - 3 ) ( x + 7 ) = x² + 7x - 3x - 21 = x² + 4x - 21
( x + 3 ) ( x - 7 ) = x² - 7x + 3x - 21 = x² - 4x - 21
Answer:
x=5
Step-by-step explanation:
Answer:(x,y)⇒(x-5,y+7)
0'⇒(-4,2),
P'(-2,3)
Q'(2,4)
R'(0,5)
(x,y)⇒(-x,-y)
O'((1,-5)⇒O''(-1,5)
P'(-2,3)⇒P''(2,-3)
Q'(2,4)⇒Q''(-2,-4)
R'(0,5)⇒R''(0,-5)
Step-by-step explanation:
Not sure to be honest but search on google
