Question

vi. 9a²x2 – 8x2 – 5 from -8a2x2 + 5x2 + 15
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Answer 1

= -8a2x2 + 5x2 +15 - ( 9a2x2 - 8x2 - 5)

= -8a2x2 + 5x2 +15 - 9a2x2 + 8x2 +5

=. -17x2a2 + 13x2 + 20

Answer 2

$- 8 {a}^{2} {x}^{2} + 5 {x}^{2} + 15 - (9 {a}^{2} {x}^{2} - \\ 8 {x}^{2} - 5$

$- 8 {a}^{2} {x}^{2} + 5 {x}^{2} + 15 - 9 {a}^{2} {x}^{2} + \\ 8 {x}^{2} + 5$

$- 17 {a}^{2} {x}^{2} + 13 {x}^{2} + 20$

hope it helps you ✔✔✔✔✔✔