Mathematics
SerafinaWoolf368
15

what times what equals -25 and when added together equals 19

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(2) Answers
teaumihi15

none i can't think of any sure the number 25 is right

Genna57

xy=-25 x+y=19 use math x+y=19 minus x both sides y=19-x sub that for y (19-x)x=-25 19x-x²=-25 times -1 both sides x²-19x=25 minus 25 both sides x²-19x-25=0 use quadratic formula for ax²+bx+c=0 x=[latex] \frac{-b+/- \sqrt{b^2-4ac} }{2a} [/latex] a=1 b=-19 c=-25 x=[latex] \frac{-(-19)+/- \sqrt{(-19)^2-4(1)(-25)} }{2(1)} [/latex] x=[latex] \frac{19+/- \sqrt{361+100} }{2} [/latex] x=[latex] \frac{19+/- \sqrt{461} }{2} [/latex] the numbers are [latex] \frac{19+ \sqrt{461} }{2} [/latex] and [latex] \frac{19- \sqrt{461} }{2} [/latex] or aproximately -1.235455276792 and 20.235455276792

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