Question

Find c when a=2 b=3 & D=49 with this formula

$d =b {}^{2} - 4ac$​

Answer 1

Answer:

a =b this is right answer

Answer 2

Answer:

Step-by-step explanation:

Given that,

a = 2, b = 3 and D = 49

∴ D = b² - 4ac ⇒ 49 = (3)² - 4 (2) (c) ⇒ 49 = 9- 8c ⇒ 49 - 9 = - 8c ⇒ 40 = - 8c

⇒ c = 40 / ( - 8 ) ⇒ c = - 5 is the answer.