Question

Sederhanakanlah aljabar berikut
1.15 - 10y -2y + 13 y
2.2p(4y - 3r +2p)
3.(2a + b)kuadrat
4.(a + 5 ) kuadrat
caranya gimana kak!tolong bantu!terimakasih

Answer 1

1.15 - 10y -2y + 13 y = 15 + (-10-2+13)y = 15 + 1y = y + 15
2.2p(4y - 3r +2p)  = 8py -6pr + 4p²
3.(2a + b)² = (2a+b)(2a+b) = 2a(2a+b)+b(2a+b) = 4a²+2ab+2ab+b² = 4a² + 4ab + b²
4.(a + 5 )² = (a+5)(a+5) = a(a+5) + 5(a+5) = a² + 5a +5a + 25 = a²+10a+25