Transcription of The quadratic formula
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The quadratic formula
The quadratic formulaYou may recall the quadratic formula for roots of quadraticpolynomialsax2+bx+c. It says that the solutions to thispolynomial are b b2 example, when we take the polynomialf(x) =x2 3x 4, weobtain3 9 + 162which gives 4 and quick terminologyIWe say that 4 and 1 arerootsof the polynomialx2 3x 4orsolutionsto the polynomial equationx2 3x 4 = mayfactor x2 3x 4 as (x 4)(x+ 1).IIf we denotex2 3x 4 asf(x), we havef(4) = 0 andf( 1) = quadratic formulaYou may recall the quadratic formula for roots of quadraticpolynomialsax2+bx+c.
The quadratic formula You may recall the quadratic formula for roots of quadratic polynomials ax2 + bx + c. It says that the solutions to this polynomial are b p b2 4ac 2a: For example, when we take the polynomial f (x) = x2 3x 4, we obtain 3 p 9 + 16 2 which gives 4 and 1. Some quick terminology I We say that 4 and 1 are roots of the ...
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