What is the missing reason in step 3? Substitution on property of equality Angle addition postulate Subtraction property of equality Addition property of equality

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y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8