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4x^2 + 5x = -1what are the solutions?
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4x^2 + 5x = -1what are the solutions?

User PaulMrG
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\begin{gathered} 4x^2+5x=-1 \\ 4x^2+5x+(25)/(16)=-1+(25)/(16)=(9)/(16) \\ (2x+(5)/(4))^2=(9)/(16)\rightarrow2x+(5)/(4)=(3)/(4)\rightarrow2x=-(2)/(4)=-(1)/(2)\rightarrow x=-(1)/(4) \end{gathered}

User M Reza
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