Simplify:
a2 - 2a + {5a2 - (3a - 4a2)}
4 Likes
= a2 - 2a + {5a2 - 3a + 4a2}
= a2 - 2a + {(5a2 + 4a2) - 3a}
= a2 - 2a + {9a2 - 3a}
= a2 - 2a + 9a2 - 3a
= (a2 + 9a2) + ( - 2a - 3a)
= 10a2 + (- 5a)
= 10a2 - 5a
Hence, a2 - 2a + {5a2 - (3a - 4a2)} = 10a2 - 5a
Answered By
3 Likes
x(y - z) + y(z - x) - z(y - x) is equal to:
0
xy + yz + zx
xy + yz - zx
xy - yz + zx
-3(1 - x2) - 2{x2 - (3 - 2x2)}