Question 477073
Im not sure how to solve a problem when it has letters squared. Like for example
1. (-2a^2b)(4a^2b^2)
{{{(-2a^2b)(4a^2b^2)}}}
These two terms are multiplied.  When you multiply, the exponents are added.
{{{a^2*a^2 = a^(2+2) = a^4}}}
{{{(-2a^2b)(4a^2b^2) = -8a^4b^3}}}
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2. -5x^2(4x-6) = {{{-20x^3 + 30x^2}}}
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3. (x-3)(x+5) 4. (2b+1)(b+4) 5. (y-7)^2
6. (x+12)(x-12). these all have letters squared i have no idea how to solve any of these or where to move them?
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This is not "solving", you don't solve for anything.  It's simplification, or multiplication.
You work on the others and send my your work via the Thank You note to check it.