Write Problem, Distribute Negative: Write down the problem and distribute the negative sign through the second parentheses. (5b^3 + 9b + 4) - (9b - 4) = 5b^3 + 9b + 4 - 9b + 4Group Like Terms: Group the like terms. 5b^3 + 9b + 4 - 9b + 4 = 5b^3 + (9b - 9b) + (4 + 4)Combine Like Terms: Simplify the expression by combining like terms. 5b^3 + (9b - 9b) + (4 + 4) = 5b^3 + 0b + 8Remove Zero Term: Since 9b - 9b equals 0, it can be removed from the expression. 5b^3 + 0b + 8 = 5b^3 + 8

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$(5b^3+9b+4) -(9b-4)=$

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Algebra 1

Add and subtract polynomials

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(5b^3+9b+4) -(9b-4)=

Write Problem, Distribute Negative: Write down the problem and distribute the negative sign through the second parentheses. $\newline$ $(5b^3 + 9b + 4) - (9b - 4) = 5b^3 + 9b + 4 - 9b + 4$
Group Like Terms: Group the like terms. $\newline$ $5b^3 + 9b + 4 - 9b + 4 = 5b^3 + (9b - 9b) + (4 + 4)$
Combine Like Terms: Simplify the expression by combining like terms. $5b^3 + (9b - 9b) + (4 + 4) = 5b^3 + 0b + 8$
Remove Zero Term: Since $9b - 9b$ equals $0$ , it can be removed from the expression. $\newline$ $5b^3 + 0b + 8 = 5b^3 + 8$