Question

cuánto es 2r²-5r+3;=1​

Answer 1

Explicación paso a paso:

$2r {}^{2} - 5r + 3 = 1 \\ 2r {}^{2} - 5r + 3 = 0 \\ factor \: comun \\ \ r(2 - 1) \sqrt{4} (2r - 1) = \\ r(2 - 1) - 2(2r - 1) = 0 \\( 2r - 1) \times (r - 2) = 0 \\ \\ 2r - 1 = 0 \\ 2r = ( - 1) \div 2r \\ x = \frac{1}{2} \\ \\ r - 2 = 0 \\ r = 2 \\ resultado \: es \\ x = \frac{1}{2 } \\ \\ r = 2$