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First of all let's start with a lttle explanationn of waht a polynomial is.

A polynomial is a function of x denoted f(x) which is defined as

f(x)=a₀+a₁...

Method 1 (algebraically):

Since we have "y=" at the start of both equations, we can substitue one into the other to get

3x-10=2x+5

T...

y=3x (1)

2x+y = 5 (2)

Here we are being asked to find what the value of x and y is. It is asking us to substitute either x or y into the equation to help us find our solutio...