x^2 + 3
= x^2 - (-3)
= x^2 - 3i^2
= (x - i√3)(x + i√3)
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x2 - 9x + 20 = (x - 4)( x - 5)
Oh, dude, that's like basic math, right? So, 2x squared plus x squared is just 3x squared. It's like adding apples to apples, but with math. Easy peasy lemon squeezy!
2(5c + 2d)(5c + 2d)
35
Well, honey, x squared plus 6x is a polynomial expression that can be simplified by factoring out an x. So, the answer is x(x + 6). Now go forth and conquer those math problems like the boss you are!