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கணிதம்
Class 9
இயற்கணிதம்
இயற்கணித முற்றொருமை
1.
சரியான விடையைத் தேர்ந்தெடு
Exercise condition:
2
m.
1
.
(x + y)(x^2 - xy + y^2)=
(x + y)^3
(x - y)^3
(x^3 - y^3)
(x^3 + y^3)
2
.
(a + b - c)^2=
(a + b + c)^2
(-a - b + c)^2
(a - b + c)^2
(a - b - c)^2
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