Sum of two numbers is 25 and their difference is 13. Find their product.
We know, (x + y)2= (x − y)2 + 4xy (25)2 = (13)2 + 4xy 4xy = (25)2 − (13)2 xy = 456 4 = 114
We know, (x + y)2= (x − y)2 + 4xy
(25)2 = (13)2 + 4xy
4xy = (25)2 − (13)2
xy = 456 4 = 114
1297 MCQ for effective preparation of the test of Number System - All NUMBERS on the Tests of Word Problems section.
Read the MCQ statement: Sum of two numbers is 25 and their difference is 13. Find their product. , keenly and apply the method you have learn through the video lessons for Number System - All NUMBERS on the Tests to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 91-12858.