I’m gonna assume the 3 next to a is an exponent since you can’t factor it if it’s not an exponent. Note: use ^ before a number to tell the number after ^ will be an exponent. For example: 64+27a^3 Anyway let’s solve. 64+27a^3 Write in exponential form: 4^3+3^3 x3 Multiply the terms with equal exponents: 4^3+(3x)^3 Factor the expression using a^3+b^3=(a+b)(a^2-ab+b^2): (4+3x)(4^2-4x•3x+(3x)^2) Evaluate, calculate, and rewrite: (4+3x)(16-12x+9x^2)