Question

1. fully simplify: $13x^{3}y^{2}(-7x^{5}y^{3})$

Explanation:

Step1: Multiply the coefficients

$13 \times (-7) = -91$

Step2: Combine $x$ terms (add exponents)

$x^2 \times x^5 = x^{2+5} = x^7$

Step3: Combine $y$ terms (add exponents)

$y^2 \times y^2 = y^{2+2} = y^4$

Step4: Combine all parts

$-91 \times x^7 \times y^4$

Answer:

$-91x^7y^4$