13 came by a fast train @60 km/hr and I’ll go back by a slow train @ 40 km/hr. Find the average speed of my journey (a) 50 (6) 48 (C) 51 (d) 49.4 (e) Data Insufficient About the author Alaia
Answer: Choose the correct answer: On simplification (a + b)(a – b) – a² + b2 gives : a) 2a? – 2b2 c) 0 b) 2a2 + 2b2 d) 262 plz answer this problem and who will answer I will mark as brainlist and thanks him… Reply
Step-by-step explanation:
e) data insufficient
Tc keep smiling
Answer:
Choose the correct answer: On simplification (a + b)(a – b) – a² + b2 gives :
a) 2a? – 2b2
c) 0
b) 2a2 + 2b2
d) 262
plz answer this problem and who will answer I will mark as brainlist and thanks him…