X²+2x+1
Split the middle terms and factorize.
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Answered by
1
x²+2x+1=0
x²+X+X+1=0
X(X+1)+1(X+1)=0
(X+1)(X+1)=0
(X+1)²=0
X+1=0
X=-1
x²+X+X+1=0
X(X+1)+1(X+1)=0
(X+1)(X+1)=0
(X+1)²=0
X+1=0
X=-1
Answered by
1
x²+2x+1
→x²+x+x+1 = 0
→x(x+1)+(x+1) = 0
→ (x+1)(x+1) = 0
→ x+1 = 0
→x = -1
→x²+x+x+1 = 0
→x(x+1)+(x+1) = 0
→ (x+1)(x+1) = 0
→ x+1 = 0
→x = -1
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