Mathematics: I need help please.

(i) f(-3) = (-3)^2+2(-3)+1So9-6+1=10-6=4(ii)f(5)= (5)^2+2(5)+1so25+10+1=36(iii) Please check this question if it s correct or not...

I need help please. - id11177348, attwertt

emiliapizzillo

15.03.2021

Step-by-step explanation:

$(3x + 10) + (5x + 18) = 180 \\ 8x + 28 = 180 \\ 8x = 152 \\ x = \frac{152}{8} \\ x = 19$

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LanBon02

01.08.2020

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

9-6+1=10-6=4

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

25+10+1=36

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

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