Tolong ya jawabin pakek cara jawabin no 17,18,19,20
Jawaban Terkonfirmasi
17) 5(2p² + p + 11) – (-3(p²-5p+2))
= 10p² + 5p + 55 + 3p² – 15p + 6
= 13p² – 10p + 61
18) 4p – q
= 4(x²-3x-2) – (3x²+2x-4)
= 4x²-3x²-12x-2x-8+4
= x² – 14x – 4
19) 7x(x-y+2) – 5x(x-2y-1)
= 7x²-5x²-7xy+10xy+14x+5x
= 2x² + 3xy + 19x
20) x² + 8x – 5 – ( -x²+2x -5)
= x²+x²+8x-2x-5+5
= 2x² + 6x
= 2x(x+3)
= 2(x² + 3x)