Advertisements
Advertisements
Question
Multiply: (3x - 5y + 2)(5x - 4y - 3)
Solution
(3x - 5y + 2)(5x - 4y - 3)
⇒ 3x (5x - 4y - 3) - 5y (5x - 4y - 3) + 2 (5x - 4y - 3)
⇒ 15x2 - 12xy - 9x - 25xy + 20y2 + 15y + 10x - 8y - 6
⇒ 15x2 - 12xy - 25xy - 9x + 10x + 20y2 + 15y - 8y - 6
⇒ 15x2 - 37xy + x + 20y2 + 7y - 6
APPEARS IN
RELATED QUESTIONS
Get the algebraic expression in the following case using variables, constants and arithmetic operations.
Product of numbers y and z subtracted from 10.
Factorize xy9 - yx9
x3 - 8y3 + 27z3 +18xyz
(2x - 3y)3 + (4z - 2x)3 + (3y - 4z )3
Evaluate: (a2 + b2 + c2 - ab - bc - ca)(a + b + c)
Evaluate:
(i) (a + b)(a - b)
(ii) (a2 + b2)(a + b)(a - b); using the result of (i).
(iii) (a4 + b4)(a2 + b2)(a + b)(a - b); using the result of (ii).
Divide: 25x2y by - 5y2
Divide: 15x2 + 31xy + 14y2 by 5x + 7y
Will the value of 11x for x = –5 be greater than 11 or less than 11? Explain.
Express the following properties with variables x, y and z.
Commutative property of multiplication
