bryanna7132 bryanna7132
  • 14-01-2022
  • Mathematics
contestada

Plz I need some help with 11-12 . My teacher didn’t even explain it correctly so now I’m confused.

Plz I need some help with 1112 My teacher didnt even explain it correctly so now Im confused class=

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dhlaminimbalenhle1 dhlaminimbalenhle1
  • 14-01-2022

Answer:

Step 1: Transpose everything to one side

12. x²+16x+15-10x+4=0

Step 2: Add the like terms

x² + (16x - 10x) + 15 + 4=0

x² + 6x + 19=0

Step 3: Use the quadratic formula to get the value(s) of x.

a=1 b=6 c=19

[tex]x = \frac{ - b + - \sqrt{b {}^{2} - 4ac } {}^{} }{2a} [/tex]

therefore, x=... or x

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