Karen Morrison and Nick Hamshaw Solutions for Exercise 6: Exercise 2.6

Simplify the expression by removing brackets and collecting like terms: $3x^2\left(4-x\right)+2\left(5x^2-2x^3\right)$

Simplify the expression by removing brackets and collecting like terms: $x\left(x-y\right)+3\left(2x-y\right)$

Simplify the expression by removing brackets and collecting like terms: $4\left(x-2\right)+3x\left(4-y\right)$

Simplification of the expression by removing brackets and collecting like terms $x\left(x+y\right)+x\left(x-y\right)$ we get $k{x}^2$. Find the value of $k$.

Simplify the expression by removing brackets and collecting like terms: $2x\left(x+y\right)+2\left(x^2+3xy\right)$

Simplify the expression by removing brackets and collecting like terms: $x\left(2x+3\right)+3\left(5-2x\right)$

Simplify the expression by removing brackets and collecting like terms: $4\left(2x-3\right)+\left(x-5\right)$

Simplify the expression by removing brackets and collecting like terms: $3\left(4xy-2x\right)+5\left(3x-xy\right)$