Can i have help solving this trinomial equation? 4x^2+17x+15=9?

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Answer 1 · 2018-03-01T03:36:06

#color(red)(x=(-17+- sqrt(193)) / 8#

#4x^2+17x+15=9#
#4x^2+17x+6 = 0#

This cannot be factored normally. Use quadratic formula:

#(-b+-\sqrt(b^2-4ac))/(2a)#

where #a = 4#, #b = 17#, and #c=6#.

#x=(-(17)+- sqrt((17)^2-4(4)(6)))/(2(4))#

#color(red)(x = (-17+- sqrt(193))/ (8)#

You can use a calculator if you want decimals.