Verified answer

Olá Juliana

a)

(5a-b)² = (5a-b)(5a-b) = 25a²-5ab -b5a +b² = 25a² + b² - 10ab

b) ^ = sinal de elevado

(m³+6y²)² = (m³+6y²)(m³+6y²) = m^6 + m³6y² + 6y²m³ + 36y^4 = m^6 + 36y^4 + 2.6y²m³

c)

4(x+2)² = 4(x+2)(x+2) = 4(x² + 4x + 4) = 4x² + 16x + 16

d)

(2x + 2)² = (2x + 2)(2x+2) = 4x² + 8x + 4

e)

(x+4)² = (x+4)(x+4) = x² + 8x + 16

f)

(x+4)(x-4) = x² -4x + 4x + 16 = x² + 16

Abraços!

a)

25a²-10ab+b²

b)

m³*²+12m³y²+36y²*²

m(elevado a 6) + 12m³y² +36y(elevado a 4)

c)

4(x²+4x+4)

4x²+16x+16

d)

4x²+8x+4

e)

x²+8x+16

f)

x²-16