Use an area model to multiply (x+5)^2. Write your answer as a sum. Please DON'T put the link or i will report you because I can't use that link.

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you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5