Question

Can anyone help with this? I will mark you as brainliest!

Answer 1

Answer:

1.25x10^2

Step-by-step explanation:

5x5^2

5x5x5=125

125=1.25x10^2

Therefore 5x5^2=1.25x10^2

Answer 2

Answer:

5^3

Step-by-step explanation:

In laws of indices x^2 × x^5. The powers are added when the bases are multiplied and when its division you subtract.

${x}^{2} + {x}^{5} = x ^{2+ 5} = {x}^{7}$

Therefore so 5x×5x^2=5x^3

$5x {}^{1} \times 5x {}^{2} = 5x {}^{2 + 1} = 5x {}^{3}$