Maths
posted by Gilda .
*I'm a bit confused with this qn*
Expand and Simplify 3(3xy)^2

3(3xy)^2
= 3(3xy)(3xy)= 3(9x^2  3xy  3xy + y^2)
= 27x^2  18xy + 3y^2
Respond to this Question
Similar Questions

Maths
How do i expand and simplify (2x+5) (3x4) 
Maths
Please can you expand and simplify the following: (2x5)(x+3) Many thanks. Happy New Year 
Maths
Expand and simplify expression for the area of an rectangle Shorter side = x+3 Longer side = 5x4 
maths
Solve 5x + 3y = 4 3x + 4y = 9 Just a bit confused Please help 
Math
Hi there! I am so confused about these questions if anyone could help that would be great. 1. Simplify. x+5/x^2+6x+5 A) 1/x+1; where x= 1*** B) 1/x+1; where x=1,5 C) 1/x5; where x=5 D) x5 2. Simplify. x^2+3x4/x+4 A) 1/x4; where … 
Urgent math
so I tried to expand this question and I got x^3 *x2, i don't know if it's right but if not can I get a step by step explanation please, Expand (2x + y^2)^5. (Simplify your answer completely.) 
maths
expand and simplify:2(x÷2)squared(2x1)(x+2) 
maths
expand and simplify:(5x3)(2xsquared+3x3) 
Maths
Show that: (3x1)(x+5)(4x3) = 12x^3 + 47x^2  62x +15 for all values of x. (3x1)(x+5)(4x3) = (? 
Algebra
need help checking Create a 2column proof for the following equation. X + X + 10 + 2(2X + 10) = 180 X + X + 10 + 2(2X + 10) = 180 (Given) 2X + 10 + 2(2X + 10) = 180 (Simplify) 2X + 10 + 4X + 20 = 180 (Expand) 6X + 30 = 180 (Simplify) …