Please solve the factor of
f(x)= -x^2 + 2x +3
show workout

x = 3, -1

Step-by-step explanation:

By Middle term splitting,

=> -x² + 2x + 3 = 0

=> -x² + 3x - x + 3 = 0

=> -x (x - 3) -1 (x - 3) = 0

=> (x - 3) (-x -1) = 0

=> x = 3, -1

Hope it helps.

range =5

step-by-step explanation:

to find the range, we take the largest value and subtract the smallest value.

the largest value is 5

the smallest value is 0

the range is 5-0   =5