4.  Find other zeroes of polynomial f (x) = 2 x 4 - 2 x 3 - 7 x 2 + 3 x + 6 , if its two zeroes are - 3 2 a n d   3 2 .
5.  If a line 3x - 5y = b passes through the intersection point of 5x - 4y = -2 and 3x + 4y = 18 then find value of b :-
A)  6       B)  7           C)  9            D)  -9

Dear student
5.We have5x-4y=-23x+4y=18Adding the above equations we get5x+3x=168x=16x=2Putting x=2 in 3x+4y=1832+4y=184y=18-64y=12y=3So point of intersection is 2,3Given that 3x-5y=b passes through point of intersection  2,332-53=b6-15=bb=-9
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