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4x^(2)+5x+20=0quad x=?

4x2+5x+20=0x=? 4 x^{2}+5 x+20=0 \quad x=?

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Composition of linear and quadratic functions: find a valueright chevron icon

Full solution

Q. 4x2+5x+20=0x=? 4 x^{2}+5 x+20=0 \quad x=?
  1. Factor the quadratic equation: First, let's try to factor the quadratic equation.\newline4x2+5x+20=(2x+?)(2x+?)4x^2 + 5x + 20 = (2x + ?)(2x + ?)\newlineBut wait, this doesn't seem right. The middle term doesn't match up.

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