tolong beserta cara

[tex]1.2p - 3q = 2(4 {a}^{2} ) - 3( - 5a + {a}^{2} )[/tex]
[tex] = 8 {a}^{2} + 15a - 3{a}^{2} [/tex]
[tex] = 8 {a}^{2} - 3 {a}^{2} + 15a[/tex]
[tex] = 5 {a}^{2} + 15a[/tex]
[tex]2. - 2p( {q}^{2} - r) - 3p( {p }^{2} - {r}^{2} ) + [/tex]
[tex] r(2p - q)[/tex]

[tex] - 2p {q}^{2} + 2pr - 3 {p}^{3} + 3p {r}^{2} + 2pr [/tex]
[tex] - qr[/tex]
[tex] - 3 {p}^{3} - 2p {q}^{2} + 3p {r}^{2} + 4pr - qr[/tex]

3. (Foto)

4.(Foto)

Sori nomor 5gak sempet

Sori juga kalo salah

1. 2P-3Q = 2(4a2+3a) - 3(-5a+a2)
= 8a2+6a+5a-3a2
=5a2 +21a