Question

i) (x + 9). (x + 2) =
j) (x + 5). (x - 2) =
k)(x + 2). (x2 + 1) =
1) x3. (x-3) =​

Answer 1

( x + 9). (x + 2)

x.x+2x+9x+9×2

x²+11x+18

(x + 5). (x - 2)

x.x-2x+5x-5×2

x²+3x-10

(x + 2). (x2 + 1)

x.x²+x+2x²+2

x³+x+2x²+2

x3. (x-3)

x⁴-3x³