Question

Multiplying Monomials1) 2x^3y^3 * 3y^4 2) 3vu^2 * 3vu^23) yx^3 * x^3 * 3yx^4 4) 2x^2 y^2 * 4x^3 y^45) −8x^2(7x − 2)6) 5x(4x + 6)7) 2k(k − 1)8) −4m^4(5m − 8n)9) 8a^2(a^2 − 5a + 5)10) 5p(7p^2 + 9p − 7)

Answer 1

Solution

We want to mutiply

(1).

$2x^3y^3\times3y^4=6x^3y^7$

(2).

$3vu^2\times3vu^2=9v^2u^4$

(3).

$yx^3\times x^3\times3yx^4=3x^{10}y^2$

(4).

$2x^2y^2\times4x^3y^4=8x^5y^6$

(5).

$-8x^2(7x-2)=-56x^3+16x^2$

(6).

$5x(4x+6)=20x^2+30x$

(7).

$2k(k-1)=2k^2-2k$

(8).

$-4m^4(5m-8n)=-20m^5+32m^4n$

(9).

$8a^2(a^2-5a+5)=8a^4-40a^3+40a^2$

(10).

$5p(7p^2+9p-7)=35p^3+45p^2-35p$