x^2 -2ax+(a^2-b^2)plzz solve
Answers
just solve
Step-by-step explanation:
you you can download doubtnut in playstore app Market...
Answer:
x = a + b OR x = a - b
Note:
★ The possible values of the variable for which the polynomial becomes zero are called its zeros.
★ To find the zeros of the polynomial p(x) , operate on p(x) = 0 .
★ A quadratic polynomial can have atmost two zeros .
★ If α and ß are the zeros of the quadratic polynomial ax² + bx + c , then ;
• Sum of zeros , (α + ß) = -b/a
• Product of zeros , (αß) = c/a
★ If α and ß are the zeros of any quadratic polynomial , then it is given by ;
x² - (α + ß)x + αß
★ If α and ß are the zeros of the quadratic polynomial ax² + bx + c , then they (α and ß) are also the zeros of the quadratic polynomial k(ax² + bx + c) , k≠0.
Solution:
Here,
The given quadratic polynomial is ;
x² - 2ax + (a² - b²)
Now,
In order to find the zeros of the given quadratic polynomial let's equate it to zero and further using factorisation by middle term splitting method , let's find the zeros .
Thus,
=> x² - 2ax + (a² - b²) = 0
=> x² - (a + a)x + (a² - b²) = 0
=> x² - (a + b + a - b)x + (a + b)(a - b) = 0
=> x² - (a + b)x - (a - b)x + (a + b)(a - b) = 0
=> x•[ x - (a + b) ] - (a - b)•[ x - (a + b) ] = 0
=> [ x - (a + b) ]•[ x - (a - b) ] = 0
=> x - (a + b) = 0 OR x - (a - b) = 0
=> x = a + b OR x = a - b
Hence,
The required answer is ;
x = a + b OR x = a - b