Question

Plz answer fast it is very important right answer will be given brainliest.

Answer 1

Answer:

$1)2x {}^{2} - 4y {}^{2}$

$2) \: 2a - 6b + 10c$

$3) \: 343 \: \: \: \: 81 \: \: \: \: 41$

$4) \: 1 \: \: \: a {}^{7} \: \: \: 9 {}^{5} \: \: \: 20 {}^{11}$

Step-by-step explanation:

$this \: is \: the \: ans \: of \: you \: question$

Answer 2

Answer:

1.

=3x^2 - 4y^2  

2. = 3a - 5b + 7c - a + b - 3c

= 2a - 4b + 4c

3. (a)7^3 = 343

  (b)3^4 = 81

  (c) = 2^4 + 5^2

       = 16 + 25

       = 41

4. a) 2

b)a^7

c) 9^{3*5-10}

=9^5

d) 9^11+11

9^22