blade0429 blade0429

16-06-2016
Mathematics

contestada

At which points do the two equations y = 5 + x and y = x2 - 7 intersect?

Respuesta :

16-06-2016

Hello,

y=5+x
y=x²-7
==>x²-7=5+x
==>x²-x-12=0
==>(x-4)(x+3)=0
The points are:

(4,9) and (-3,2)

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