Question

the movement of the progress bar may be uneven becausimplify the expression.$(5ab^{3})^{2}(-3a^{4})LXB0\bigcirc -15a^{5}b^{6}LXB1\bigcirc -75a^{6}b^{6}$

Explanation:

Step1: Expand the squared term

$(5ab^3)^2 = 5^2 \cdot a^2 \cdot (b^3)^2 = 25a^2b^6$

Step2: Multiply by the second term

$25a^2b^6 \cdot (-3a^4) = 25 \times (-3) \cdot a^{2+4} \cdot b^6$

Step3: Compute coefficients and exponents

$= -75a^6b^6$

Answer:

$\boldsymbol{-75a^6b^6}$ (the fourth option)