Q. If 14y2−21x=a(2y2−3x), where a is a constant, what is the value of a?
Compare coefficients: Compare the coefficients of the like terms on both sides of the equation.The equation given is 14y2−21x=a(2y2−3x). To find the value of 'a', we need to compare the coefficients of the corresponding terms on both sides of the equation.
Compare y2: Compare the coefficients of y2. On the left side, the coefficient of y2 is 14. On the right side, the coefficient of y2 is 2a. Therefore, we have 14=2a.
Solve for 'a': Solve for 'a' using the y2 terms.Divide both sides of the equation 14=2a by 2 to solve for 'a'.14÷2=2a÷27=a
Verify with x terms: Verify the solution with the x terms.Now, let's check if the value of 'a' is consistent with the coefficients of the x terms. On the left side, the coefficient of x is −21. On the right side, the coefficient of x is −3a. Substitute the value of 'a' we found into −3a to see if it equals −21.−3×7=−21−21=−21This confirms that the value of 'a' is correct.
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