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anonymous
 one year ago
Use the quadratic formula to solve x2 + 7x + 8 = 0. Estimate irrational solutions to the nearest tenth.
A.
{–12, 5}
B.
{–11.1, –2.9}
C.
{–5.6, –1.4}
D.
{–3.9, 12.1}
anonymous
 one year ago
Use the quadratic formula to solve x2 + 7x + 8 = 0. Estimate irrational solutions to the nearest tenth. A. {–12, 5} B. {–11.1, –2.9} C. {–5.6, –1.4} D. {–3.9, 12.1}

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welshfella
 one year ago
Best ResponseYou've already chosen the best response.3x = 7 +/ sqrt(7^2  4*1*8)  2

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3are you confident in working that out?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i barley started to learn this, so i you can walk through it with me?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3ok well use ur calculator its probably easier to work out sqrt(7^2  4*1*8) first this = sqrt(49  32) = sqrt 17

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3can you find sqrt17 on ur calculator?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1433007243806:dw

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3you need to be more accurate than that  find it to the nearest hundredth

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0my calcuator doesnt do that!

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3oh ok  are you on a PC?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3you can use the calculator on that anyway the answer is 4.12 so you have 2 solutions 7 + 4.12 7  4.12  and  2 2
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