উৎপাদকে বিশ্লেষণ করুন:
2n4-19n3+31n2+31n-21
a+b=4, ab=3 হলে a2+b2a-b এর মান নির্ণয় করুন।
A person running an 800-meter race averages 130 meters per minute for the first 34 of the race. The average speed for the remainder of the race is 145 meters per minute. What is the person's average speed for the entire 800 meters rounded to the nearest whole number ?
সমাধান করুন: 3x+74+5x-47=x+3 12