Question

If a = 1: b = 4, c= -5 then find the value of b2-4ac
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Answer 1

Answer:

b² - 4ac = 36

Step-by-step explanation:

a = 1

b = 4

c = -5

b² - 4ac = (4)² - 4(1)(-5)

= 16 + 20

= 36

Answer 2

Answer:

b2bor 2b is same thing

2(4)-4(1)(-5)

8+20 (bcoz - and - is plus so -4×-5 is +20

Step-by-step explanation:

8+20 is 28