Advertisements
Advertisements
प्रश्न
What should be taken away from 3x2 - 4y2 + 5xy + 20 to obtain - x2 - y2 + 6xy + 20?
Advertisements
उत्तर
Let p be the required term.
(3x2 - 4y2 + 5xy + 20) - p = - x2 - y2 + 6xy + 20
p = (3x2 - 4y2 + 5xy + 20) - (- x2 - y2 + 6xy + 20)
= 3x2 - 4y2 + 5xy + 20 + x2 + y2 - 6xy - 20
= 3x2 + x2 - 4y2 + y2 + 5xy - 6xy + 20 - 20
= 4x2 - 3y2 - xy
संबंधित प्रश्न
Simplify combining like terms: p − (p − q) − q − (q − p)
Add: 14x + 10y - 12xy - 13, 18 - 7x - 10y + 8xy, 4xy
Subtract:
2a2 from − 7a2
Add:
2a + 6b + 8c; 16a + 13c + 18b
Add:
3y2 − 10y + 16; 2y − 7
Solve:
(6a − 5b − 8c) + (15b + 2a − 5c)
On simplification `(3x + 3)/3` = ______.
Add the following expressions:
t – t2 – t3 – 14; 15t3 + 13 + 9t – 8t2; 12t2 – 19 – 24t and 4t – 9t2 + 19t3
Each symbol given below represents an algebraic expression:
= 2x2 + 3y, 
= 5x2 + 3x, 
= 8y2 – 3x2 + 2x + 3y
The symbols are then represented in the expression:
Find the expression which is represented by the above symbols.
Write two different algebraic expressions for the word phrase “`(1/4)` of the sum of x and 7.”
