exam Maths Puzzle Numerical Ability

1.3x squared-12x 2.2w squared-8w-10 3.4x squared-25

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exam Other Question

Hello

how do i solve the system by graphing:

x + y = 4
y = 2x + 1

thank you.
For the function f(x)=x^2-2x+1
(a)find f(0)

(b)solve f(x)=0