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mojhsa [17]
2 years ago
9

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

Mathematics
1 answer:
rusak2 [61]2 years ago
6 0

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

x =  \frac{ - b +  -  \sqrt{b {}^{2} - 4ac }  {}^{} }{2a}

therefore, x=... or x

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