meredith48034 meredith48034

15-10-2020
Mathematics

contestada

Find the value(s) of "k" that will cause the equation 4x^2 +kx + 4 to have one real solution.

Respuesta :

tramserran tramserran

15-10-2020

Answer: k = {8, -8}

Step-by-step explanation:

In order for a quadratic equation to have exactly one solution, the discriminant must equal zero. → b² - 4ac = 0

4x² + kx + 4 = 0

↓ ↓ ↓

a=4 b=k c=4

b² - 4ac = 0

k² - 4(4)(4) = 0

k² = 64

k = √64

k = ± 8

Answer Link

Otras preguntas

Choose the right variant 1 This book will take to years to write. A. After two years I'll write this book B. In two years time I'll have written this book C . A

Holly decided to share 1/2 of her share of the pizza with Deb. How much did each of them actually?

let f(x)=9x-2 and g(x)=-x+3. find f(g(x)).

let f(x)=2x+2. solve f^-1(x) when x=4.

let f(x)=9x-2 and g(x)=-x+3. find f(g(x)).

let f(x)=2x+2. solve f^-1(x) when x=4.

the difference of two numbers is 11 and their product is 42.find these numbers.

Helen Grey By Christina Georgina Rossetti Because one loves you, Helen Grey, Is that a reason you should pout, And like a March wind veer about, And frown, and

Six nickels is what percent of one dollar? What percent of $2.00 would it be? Please help.

why do we use a coeficient to remove the propotionality