Question

Find the value of m, 9x^2 - 3mx + 4 =0 has equl roots ​

Answer 1

Answer:

+4 or -4 ......mark me the brainliest

Answer 2

Answer:

m=+4, -4

Step-by-step explanation:

roots are equal

you know what,

∆=0 then roots are real and equal

∆=greater than 0 then roots are real and unequal

∆=less than 0 roots are not real

our given is roots are equal

∆=0

9x²-3mx+4=0

compare with

ax²+bx+C=0

a=9, b=-3m C=4

b²-4ac=0

(-3m)²-4×9×4=0

9m²-36×4=0

9m²-144=0

9m²=144

m²=144/9

m²=16

m=√16

m=+4, -4