1.(x+4)(x+15) 2.(2x-5)(2x+3) 3.(4x+3)(5x-2) 4.(8-5x)(9-5x) 5.(10-3p)(7+3p) 6.(15+6p)(8-4p) 7.(6p-9q)(6p+9q) 8.(8p+4q)(6p+7q)

ralat no. 8 ya
8. (8p+4q) (6p+7q) =
48p^2 + 24 pq + 56 pq + 28 q^2
= 48p^2 + 80pq + 28q^2
cara di atas yaa semoga membantu

1)
(x + 4)(x + 15)
= x² + 15x + 4x + 60
= x² + 19x + 60

2)
(2x - 5)(2x + 3)
= 4x² + 6x - 10x - 15
= 4x² - 4x - 15

3)
(4x + 3)(5x - 2)
= 20x² - 8x + 15x - 6
= 20x² + 7x - 6

4)
(8 - 5x)(9 - 5x)
= 72 - 40x - 45x + 25x²
= 72 - 85x + 25x²
= 25x² - 85x + 72

5)
(10 - 3p)(7 + 3p)
= 70 + 30p - 21p - 9p²
= 70 + 9p - 9p²

6)
(15 + 6p)(8 - 4p)
= 120 - 60p + 48p - 24p²
= 120 - 12p - 24p²

7)
(6p - 9q)(6p + 9q)
= 36p² + 54pq - 54pq - 81q²
= 36p² - 81q²

8)
(8p + 4q)(6p + 7q)
= 48p² + 56pq + 24pq + 28q²
= 48p² + 80pq + 28q²