Question

This is algebra 1 Quadratics I need help with this 9th grade I need help with it

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Answer 1

Steven's mistake was made on line 2, rather than jotting down '49', left it as '-49'. This threw off his entire equation. The actual x intercepts are x = 2 and x = 5. Explanation is below

Step-by-step explanation:

`=(7+√(-7^2-4(1)(10)) )/(2(1)) \\\\=(7+√(49-40))/(2\cdot \:1) \\\\=(7+√(9))/(2\cdot \:1)\\\\=(10)/(2) = 5\\x=5`

`=(7-√(\left(-7\right)^2-4\cdot \:1\cdot \:10))/(2\cdot \:1)\\=(7-√(9))/(2\cdot \:1)\\=(7-3)/(2)\\=(4)/(2) \\x=2`