Find the errors and correct them in the following :The value of follow

1.	Find the errors and correct them in the following :The value of following when a = – 3 : a2 – a – 6 = (- 3)2 – (- 3) – 6 = 9 – 3 – 6 = 0
Answer» a² – a – 6 = (- 3)² – (- 3) – 6 (when a = – 3) = (- 3 × – 3) + 3 – 6 (Error is – (- 3) = – 3) = 9 + 3 – 6 = 12 – 6 = 6

Find the errors and correct them in the following :The value of following when a = – 3 : a2 – a – 6 = (- 3)2 – (- 3) – 6 = 9 – 3 – 6 = 0

Answer»

a² – a – 6

= (- 3)² – (- 3) – 6 (when a = – 3)

= (- 3 × – 3) + 3 – 6

(Error is – (- 3) = – 3)

= 9 + 3 – 6

= 12 – 6 = 6