Question

Ex.4 Pag.24 Scrieti sub forma de putere
a) x (la puterea a 5-a) de inmultit la x (la puterea a 7-a)
c) (-4y)la puterea a 2-a de inmultit la (4y la puteria a 3-a)

Answer 1

a)
$x^{5}* x^{7}= x^{5+7} =x^{12}$
c)
$(-4y)^{2}*(4y) ^{3} = (4y)^{2}*(4y) ^{3}= (4y) ^{3+2}= (4y) ^{5}$

Answer 2

a. x⁵*x⁷=x⁵⁺⁷=x¹²
b. (-4y)²(4y)³=(-1)²(4²)(y²)(4³)(y³)=(4²⁺³)(y²⁺³)=4⁵y⁵=1024y⁵