Question

Evaluate b2−4ac
if: a=2 b=−5 c=2

Answer 1

Step-by-step explanation:

Explanation:

To solve this you must substitute:

2

for

a

in the expression.

−

5

for

b

in the expression.

2

for

c

in the expression.

√

b

2

−

4

a

c

becomes:

√

−

5

2

−

(

4

×

2

×

2

)

√

25

−

16

√

9

=

±

3

Reminder, the square root of a number results in plus or minus the result.

Answer link

Answer 2

Answer:

Given,

a=2, b=-5, c=2

b^2-4ac= (-5) ^2-4(2) (2)

= 25-16=9.

Step-by-step explanation:

Hope that helps you...