Statement sum Involving Quadratic Equations:
Step 1: Translate the word problem into methamatical statement.
Step 2: Then form a Quadratic Equation.
Step 3: Solve the Quadratic Equation.
Step 4: Reject the root that satisfy the conditions of the problem.
Example: The Sum of two numbers is 18 and their product is 45. Find the numbers.
Solution: Let one number = y
Other number = 18- y
According to the question:
Product = 45
y X (18-y) = 45
y= 15 , 3
So One number is 15 and the other number is 3
One side of a rectangle is 4cm shorter than three times the other side. Find the sides if the area of the rectangle is | |||
Right Option : D | |||
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The product of two numbers is 640. Their difference is 12. Find these numbers. | |||
Right Option : B | |||
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One side of a rectangle is 4cm shorter than three times the other side. Find the sides if the perimeter of the rectangle is 48cm. | |||
Right Option : C | |||
View Explanation |
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