Question

13. Find the following products:
(i) (x+7) (x-5)
(ii) (3x+5)(3x+11)
(iii) (2x²-3) (2x²+5)​

Answer 1

Answer:

i)x= -37

)x= -37ii) x= -103/9

)x= -37ii) x= -103/9iii) x= -11/4

)x= -37ii) x= -103/9iii) x= -11/4I think this is ur answer

Answer 2

Step-by-step explanation:

i. (x+7)(x-5)

= x(x-5)+7(x-5)

= x²-5x+7x-35

= x²+2x-35 answer

ii. (3x+5)(3x+ 11)

= 3x(3x+11)+5(3x+11)

= 9x²+33x+15x+55

= 9x²+ 48x+55 answer

iii. (2x²-3)(2x²+5)

= 2x²(2x²+5)-3(2x²+5)

= 4x⁴+10x²-6x²+15

= 4x⁴+4x²+15 answer