Question

Efetue:
a) (x + 3). (x + 5)
b) (x – 2). (x – 7)
c) (x +5)2
d) (x – 5)2

Answer 1

a) (x + 3).(x + 5) =

x²+5x+3x+15

x²+8x+15

b) (x – 2).(x – 7) =

x²-7x-2x+14

x²-9x+14

c) (x +5)² =

(x²)+2(x)(5)+(5)²

x²+10x+25

d) (x – 5)² =

(x)²-2(x)(5)+(5)²

x²-10x+25

❤️ Bom estudo ❤️

05/08