Answer:
(4,2) (7,9)
Step-by-step explanation:
Answer:
5
Step-by-step explanation:
f(-4) = sqrt(2(4)^2 -7) (Plug in -4)
f(-4)= sqrt(2(16)-7) (Square 4 which is 16)
f(-4)=sqrt(32-7) (Multiply by 2)
f(-4)=sqrt(25) (Subtract 7)
f(-4)=+/- 5 (take the square root of 25 which is postive/negative 5)
Since this is a function there can only be one y to an x the positive 5 is the only answer
x²-6x=7
We need to complete square
x²-2*3x+3²=7+3²
x²-6x+9 =7+9
(x-3)² = 16
√(x-3)²=+/-√16
x-3=+/-4
x-3=4 and x-3=-4
x=7, Largest
x= - 1 , Smallest