Question

If a+b=4 and ab= -12 , find (1) a-b, (2) a²-b² ​

Answer 1

Answer:

Hey the answer for the following is

Step-by-step explanation:

a + b = 4 and ab = -12

Let us see the factors of -12

-1 , 12 12 , -1

2 , -6 6,-2

Here we see that 6-2 = 4

And 6 × -2 = -12

So a - b

6 - (-2) = 8

6^2 - (-2)^2 = 36 + 4 = 40

Answer 2

Answer:

(a-b)^2=(a+b)^2-4ab =16+48=64

a-b=√64 =8

a^2-b^2=(a+b)(a-b)

= 4×8 =32