Question

please solve the above questions for me help please ​

Answer 1

Answer:

i) -1/7

ii)-12/25

iii) 25/7

Step-by-step explanation:

a= 3 b = -4

i) = a + b / a - b

= 3 - 4 / 3 + 4

= -1 / 7

ii) = ab / a^2 + b^2

= (3)(-4) / 3^2 + -4^2

= -12 /9 + 16

= -12/ 25

iii) = a^2+b^2 / b^2 - a^2

= 3^2 + -4^2/-4^2-3^2

= 9 + 16 / 16 - 9

= 25 / 7

Be delighted :)