Multiplication of Trinomial by a Monomial

Q. Simplify the following expression;
$x(2x+3y-z)+y^2(3x+z-2y)-z(2x+3z-y).$

1. $-2y^3+3x{y}^2+2z{y}^2+2x^2-4z^2+3xy+zy+3zx$
2. $-2y^3+3x{y}^2+z{y}^2+2x^2-3z^2+3xy+zy-3zx$
3. $2y^3-3x{y}^2+2z{y}^2+2x^2-3z^2+3xy+zy-3zx$
4. $2y^3+3x{y}^2+z{y}^2+2x^2+z^2+3xy+zy-3zx$

Q. Simplify $\left(x\right)(2x+3y-4z)$.

1. $2x^2-3xy+4xz$
2. $2x^2+3xy-4xz$
3. $2x^2+6xy-2xz$
4. $2x^2+5xy-4xz$

Q. Simplify: $(3xy-2ab{)}^3-(3xy+2ab{)}^3$

Q. The product of
$(6a^2-7b+5ab)\text{and}2ab$ is _____.

1. $12a^{3}b-10a^2{b}^2+14a{b}^2$
2. $12a^{3}b+10a^2{b}^2-14a{b}^2$
3. $6a^{3}b+5a^2{b}^2-7a{b}^2$
4. $12a^{2}b+10a^3{b}^2-14a{b}^2$

Q. Multiply the expressions (2x²y² - 5xy²) and (x² - y²)

Q. [(5z-2)${}^2$+40z] $÷$ (5z+2)

1. (5z-2)${}^2$+10
2. 25z+2
3. 2
4. 5z+2

Q. Subtract $16x-11y+2z$ from the sum of $7x+6y+z$ and $-9+3y-2z$

Q. $(x^2-y^2)z+(y^2-z^2)x$

Q. Multiply the expressions (2x²y² - 5xy²) and (x² - y²)

Q. State True or False.

1. True
2. False