Question

Wey me pueden ayudar con estos ejercicios de mate. Porfa... Odio las matematicas :(

Answer 1

1. 5( 2x + 3) + 4( $x^{2}$- 3x + 7)

   10x + 15 + 4$x^{2}$ - 12x + 28

    -2x + 43 + 4$x^{2}$ = 4$x^{2}$ - 2x + 43

2. -7(m - n - 2) -3(-m -n + 4)

   -7m + 7n + 14 + 3m + 3n - 12

   -4m + 10n + 2

3. 6(x + 29) - ($x^{2}$ + 5x + 4) -9( -$x^{2}$ + 4x)

   6x + 174 - $x^{2}$ - 5x - 4 + 9$x^{2}$ - 36x

   -35x + 170 + 8$x^{2}$ = 8$x^{2}$ - 35x + 170

4. -1,6(a + b + c) -3,2(2,7a - c) + 4,3( a + 2,5b)

   - 8/5 x (a + b + c) - 16/5 x $(\frac{27}{10}a-c)+\frac{43}{10}x (a+\frac{5}{2} b)$

   - (8/5 x (a + b + c) + 16/5 x $(\frac{27}{10}a-c)-\frac{43}{10} . (a+\frac{5}{2} b))$

   $-\frac{1}{10}.(16(a+b+c)+32(\frac{27}{10}a-c)-43(a+\frac{5}{2}b))$

   $-\frac{1}{10}.(16a+16b+16c+\frac{432}{5}a -32c-43a-\frac{215}{2}b)$

   $-\frac{1}{10}.(\frac{297}{5}a-\frac{183}{2}b-16c)$

5. $8(w^{2}+5z^{2}.4wz)+4(-z^{2}-6w^{2}+wz)$

     $8(w^{2}+20z^{3}w)+4(-z^{2}-6w^{2}+wz)$

     $4(2(w^{2}+20z^{3}w)-z^{2}-6w^{2}+wz)$

     $4(2(w^{2}+20wz^{3})-z^{2}-6w^{2}+wz)$

     $4(2w^{2}+40wz^{3}-z^{2}-6w^{2}+wz)$

     $4(-4w^{2}+40wz^{3}-z^{2}+wz)$

Disculpa la demora, espero haberte ayudado :)