Simplify 7/56

Problem:

Simplify $ \frac{7}{56} $

Solution:

$ \frac{1}{8} $

312 is 65% of what number

Problem:

312 is 65% of what number?

Solution:

480

$ \frac{2x^2}{7} \times \frac{3}{4x^2} $

Problem:

$ \frac{2x^2}{7} \times \frac{3}{4x^2} $

Solution:

$ \frac{3}{14} $

Simplify

Problem:

$ (\frac{a^3}{m})^{-4} $

Solution:

$ (\frac{a^3}{m})^{-4} = \frac{m^4}{a^{12}} $

(x-3)(x-2)

Problem:

(x-3)(x-2)

Solution:

x = 3 or x = 2

Expanding give $ x^2 - 5x + 6 $

Solve for x

Problem:

Solution:

x = 11

The angle is 74, the top angle is 32

0 = b squared - 4 a c = 3^2 - 4(1)-3

Problem:

The problem is only this equation

0 = b squared - 4 a c = 3^2 - 4(1)-3

Solution:

This is incorrect, first or all, if you multiply a negative number, you cannot just write the number at the end like -3, this is minus 3, not multiply negative 3, you need to add a bracket there.

Alright, assume the bracket is there, the equation is still not right, 3^2 - 4(1)(-3) = 21 is not zero.

Alright, ignoring the 0 part, it means we have B = 3, A = 1, C = -3, then the answer is given by

$ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} = \frac{-3 \pm \sqrt{21}}{2} $.