plz answer this question for me I have maths exam tomo4and no fake answers plz
question 20
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plz answer this question for me I have maths exam tomo4and no fake answers plz
question 20
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Heya !!!here is your answer !!!
given that
2/3 zeros of polynomial
therefore ,
on putting the value of zeroes in polynomial we get
a ( 2/3 ) ² + 7 * 2/ 3. + b = 0.
=> 4 / 9 * a + 14 / 3 + b = 0
4a + 42 +. 9b = 0. ----------------(1)
now ,
on putting the value of second zeros in polynomial we get
a (-3 ) ² + (-3 ) *7 + b = 0
=> 9a -21 + b = 0 -----------------(2)
from equation 1 and 2 we get
4a + 42 + 9b = 0
and
9a -21 + b = 0
or b = 21 -9a
on putting the value of b in equation 1 we get
4a + 42 + 9 (21 - 9a ) = 0
=> 4a + 42 + 189 -81a
=> - 77a + 231. = 0
a => 3
hence , b = 21 - 9a
= >. 21 - 9 *3
=> 21 -27
=> -6
hence , a = 3
and b = -6
hope it helps you dear !!!
thanks !!!!
a = 3 and b = -6