Ka Tolong Jawab 10 pertanyaan yg ada di Gambar di atas ya, Soal nya Besok mau di kumpul...

PLEASE

Ka Tolong Jawab 10 pertanyaan yg ada di Gambar di atas ya, Soal nya Besok mau di kumpul…

Jawaban:

$1). 5{x}^{2} - 2 {x}^{3} + 2x + {x}^{2} - 7 + {x}^{3} = \ - {x}^{3} + 6 {x}^{2} + 2x - 7$

$2).2a(3a - 5) - 2( {a}^{2} + 3a - 3) = \ 6 {a}^{2} - 10a - 2 {a}^{2} - 6a + 6 = \ 4 {a}^{2} - 16a + 6$

$3).(3x + 2y - 4) - (x - 3y - 2) = \ 2x + 5y - 2 \ x = 5 \ y = 3 \ 2(5) + 5(3) - 2 = 10 + 15 - 2 = 23$

$4).(2x + 3)(2x - 4) + 3(x - 5) = \ 4 {x}^{2} - 2x - 12 + 3x - 15 = \ 4 {x}^{2} + x - 27$

$5). frac{p + 3}{3p} + frac{2 - 3p}{2p} = \ frac{2p + 6 + 6 - 9p}{6p} = \ frac{ - 7p + 12}{6p}$

$6).x = {a}^{2} + a - 2 \ y = 2 {a}^{2} - 3a - 4$

$3(2x - y + 4) = 6x - 3y + 12 = \ 6( {a}^{2} + a - 2) - 3(2 {a}^{2} - 3a - 4) + 12 = \ 6 {a}^{2} + a - 12 - 6 {a}^{2} + 9a + 1 + 12 = \ 10a + 12$

$8). frac{ {x}^{2} - x - 12 }{x + 3} = frac{(x + 3)(x - 4)}{(x + 3)} = x - 4$