Please help!! I'm really confused and ill give brainliest

(i) f(-3) = (-3)^2+2(-3)+1

So

9-6+1=10-6=4

(ii)f(5)= (5)^2+2(5)+1

so

25+10+1=36

(iii) Please check this question if it's correct or not

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step-by-step explanation:

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length