Question

find K if x=4 is a root of equation kx²-10x+8=0​

Answer 1

Answer:

k(4)^2-10(4)+8=0

16k-40+8=0

16k-32=0

16k=32

k=32/16

k=2

Answer 2

$\large\bf\underline\purple{Given:-}$

• x=4 is a root of equation kx²-10x+8=0

$\large\bf\underline\purple{To\:Find:-}$

• Find K

$\large\bf\underline\purple{Solution:-}$

Put x = 4 in the given equation :

➝k (4)² - 10 (4) + 8 = 0

➝16k - 40 + 8 = 0

➝16k - 32 = 0

➝16k = 32

➝k = 32/16

➝k = 2

PLEASE MARK IT BRAINILIEST