hi I need your help
please solve step by step
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Borahae
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It is other question I saw it when I was thanking your ans
I'm doing 3rd one
Solution ⬇️
✳️x²+5x=-(3-x)
✍️x²+5x=-3+x
✍️x²+5x-x+3=0
✍️x²+4x+3=0
➡️ Therefore, a=1 , b=4 ,c=3
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more important formula
- to find common difference:t2-t1,t3-t2
- to find 2nd term or 3rd term : t1+d,t2+d
- to find n term =tn=a+(n-1)d
- to find the sum of n term=
Sn=n/2(2a+(n-1)xd)
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