Question

1. (x + 3)(pngkt2)
2. (x + 8)(pngkt2)
3. (x - 7)(pngkt3)
4.(3b + 4)(pngkt2)
5.(2a + 3)(pngkt2)
bntu y kakak :) ;)

Answer 1

1. (x+3)²= (x+3)(x+3)= x²+3x+3x+9=x²+6x+9
2. (x+8)²=(x+8)(x+8)=x²+16x+16
3. (x-7)³=(x-7)(x-7)²=(x-7)(x²-7x-7x+49)=(x-7)(x²-14x+49)=x³-14x²+49x-7x²+98x-343=x³-14x²-7x²+98x-343=x³-21x²+98x-343
4. (3b+4)²=(3b+4)(3b+4)=9b²+12b+12b+16=9b²+24b+16
5. (2a+3)²=(2a+3)(2a+3)=4a²+6a+6a+9=4a²+12a+9