Question

x^2+x^3+x^4=? 5^3×6+5^4×7=?

Answer 1

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Answer 2

$a) {x}^{2} + {x}^{3} + {x}^{4} = {x}^{2}( \frac{ {x}^{2} }{ {x}^{2} } + \frac{ {x}^{3} }{ {x}^{2} } + \frac{ {x}^{4} }{ {x}^{2} }) = {x}^{2}(1 + x + {x}^{2})$

$b) {5}^{3} \times 6 + {5}^{4} \times 7 = 125 \times 6 + 625 \times 7 = 750 + 4375 = 5125$