Question

please answer by solving​

Answer 1

Answer:

2) option A is correct

if a: b = b:c

then they are in continued proportion

here a = 2 b = 5 c = 25/2

a: b = 2:5

b:c = 5:25/2 = 5×2 : 25/2×2 = 10: 25 = 2:5

So a : b = b:c so they are in continued proportion

3) x²y³ + x⁴y² = x²y²(y+x²)

= x²y²(x²+y)

option D is correct

4) ( x-10)(x+4) = x² + 4x - 10x -40 = x²-6x-40

process is that you have to multiply each of the terms of second expression by each of terms of first expression

like X × X = x²

X × 4 = 4x

-10 × X = -10x

-10×4 = -40

Hope it helps pls mark me brainliest