Q. Which equation has the same solution as x2+2x+14=−7 ?(x−1)2=−22(x+1)2=−22(x+1)2=−20(x−1)2=−20
Simplify Equation: Simplify the given equation by moving all terms to one side to set the equation to zero.x2+2x+14=−7Add 7 to both sides to isolate the quadratic expression.x2+2x+14+7=0x2+2x+21=0
Compare with Options: Compare the simplified equation with each of the provided options to find the one that has the same solution.We need to find an equation that, when simplified, will result in x2+2x+21=0.
Check Option 1: Simplify the first option and check if it matches the simplified given equation.(x−1)2=−22Expand the left side:(x−1)(x−1)=−22x2−2x+1=−22Add 22 to both sides:x2−2x+1+22=0x2−2x+23=0This does not match x2+2x+21=0.
Check Option 2: Simplify the second option and check if it matches the simplified given equation.(x+1)2=−22Expand the left side:(x+1)(x+1)=−22x2+2x+1=−22Add 22 to both sides:x2+2x+1+22=0x2+2x+23=0This does not match x2+2x+21=0.
Check Option 3: Simplify the third option and check if it matches the simplified given equation.(x+1)2=−20Expand the left side:(x+1)(x+1)=−20x2+2x+1=−20Add 20 to both sides:x2+2x+1+20=0x2+2x+21=0This matches x2+2x+21=0.
Final Match: There is no need to check the fourth option since we have already found a match in the third option. The equation (x+1)2=−20 has the same solution as x2+2x+21=0.