Question

4. Find value of b2 - 4ac, when a = 1, b = 5.c = 3​

Answer 1

Given: a = 1, b = 8, c = 15

b2 – 4ac = 82 – 4 × 1 × 15

= 64 – 60

∴ b2 – 4ac = 4

hope it helps you dear

Answer 2

Answer:

13

Step-by-step explanation:

(5)2-4*1*3 = 25-12 = 13