Mathematics
How much less 2a2 + 1 is than 3a2 - 6 ?
Algebraic Expressions
1 Like
Answer
Let 2a2 + 1 be less than 3a2 - 6 by Z.
3a2 - 6 - Z = 2a2 + 1
⇒ Z = 3a2 - 6 - (2a2 + 1)
⇒ Z = 3a2 - 6 - 2a2 - 1
Arrange the polynomial with like terms together and combine them.
⇒ Z = (3a2 - 2a2) + (- 6 - 1)
⇒ Z = a2 - 7
Hence, the number is a2 - 7.
Answered By
2 Likes
Related Questions
What must be added to x4 - x3 + x2 + x + 3 to obtain x4 + x2 - 1 ?
How much more than 2x2 + 4xy + 2y2 is 5x2 + 10xy - y2?
If x = 6a + 8b + 9c; y = 2b - 3a - 6c and z = c - b + 3a; find :
(i) x + y + z
(ii) x - y + z
(iii) 2x - y - 3z
(iv) 3y - 2z - 5x
(9x4 - 8x3 - 12x) x (3x) is equal to:
27x5 - 24x4 + 36x2
27x5 - 24x4 - 36x2
27x5 + 24x4 - 36x2
27x5 + 24x4 + 36x2