Question

1.RESOLVA:

a)(2X+3)²=

b)(4M-1)²=

c)(20N²):(2N)=

d)(3X).(-4)=

e)5X-3M+20-6X+5M-16=

Answer 1

Resposta:

a) 4x²+12x+9.

b) 16m²-8m+1.

c) 10n.

d) -12x.

e) -x+2m+4.

Explicação passo-a-passo:

a) (2x+3)²=

(2x)²+2.(2x).(3)+(3)²=

4x²+12x+9

b) (4m-1)²=

(4m)²-2.(4m).(1)+(1)²=

16m²-8m+1

c) (20n²):(2n)= 10n

d) (3x).(-4)= -12x

e) 5x-3m+20-6x+5m-16=

5x-6x-3m+5m+20-16=

-x+2m+4