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Diana.xL
 one year ago
help?
Diana.xL
 one year ago
help?

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Diana.xL
 one year ago
Best ResponseYou've already chosen the best response.0Find the value of the discriminant for each quadratic equation below. Show all steps needed to write the answer in simplest form, including substituting the values of a, b, and c in the discriminant formula. Then use the value to determine how many real number solutions each equation has. 5x^2 + x = 4

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1start by setting it equal to zero go from \[5x^2 + x = 4\] to \[5x^2+x4=0\]

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1\[\large \color{red}ax^2+\color{blue}bx+\color{green}c=0\] \[\huge \color{red}5x^2+\color{blue}1x+\color{green}{4}=0\]

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1then as @risn said compute \[\huge \color{blue}b^24\times \color{red}a\times \color{green}c\]

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1\(\color{red}a=\color{red}{5}\)

Diana.xL
 one year ago
Best ResponseYou've already chosen the best response.0oh sorry. D = 14(5)(4)

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1yeah that is right what do you get?

Diana.xL
 one year ago
Best ResponseYou've already chosen the best response.0at the end of the question it asks us "Then use the value to determine how many real number solutions each equation has".

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1that is the answer to Show all steps needed to write the answer in simplest form, including substituting the values of a, b, and c in the discriminant formula.

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1ok two steps here 81 is positive, so there are two real solutions also 81 is a "perfect square" it is the square of 9 that means both solutions are rational numbers

Diana.xL
 one year ago
Best ResponseYou've already chosen the best response.0oh ok! thank u so much! :)

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1in fact that means \[5x^2+x4=0\] can be solved by factoring you get \[(5x4)(x+1)=0\] so \[x=\frac{4}{5}\] or \[x=1\]

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1\[\color\magenta\heartsuit\]
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