Answer:
[tex]49b^{10} - 14b^{7} + b^{4}[/tex]
Step-by-step explanation:
The given expression means its being multiplied itself 2 times:
[tex](7b^{5} - b^{2})^{2} = (7b^{5} - b^{2})(7b^{5} - b^{2})[/tex]
FOIL:
[tex]49b^{10} - 7b^{7} - 7b^{7} + b^{4}[/tex]
Combine like terms:
[tex]49b^{10} - 14b^{7} + b^{4}[/tex]
