B. Prove each item (Item 3 & 4) of the following by constructing a proof by element arguments 3. (RNS)' = R'US' (De Morgan's Law) 4. (M-K) U (L-K) = (MUL) - K

Q: 7x+8=-20

A:

Q: 7 + 9

A: 7+9=

Q: 2rty-2\3 4xy³ Simplify:

A:

Q: Decide whether the statement is true or false.  The product of three negative integers is negative.

A: We have to say that the given statement is true or false: The product of three negative integers is…

Q: 88x + 7 = 89x + 15 %3D

A: We can solve this as follows:

Q: Subtract 9x? – 7x from –4x² + 6.

A: Given:    To subtract 9x2-7 from -4x2+6

Q: Evaluate: +x2-r+4 where x = -2

A:

Q: Divide -24x4v2-9xv5+12x7v5/3x4v2 Simplify your answer as much as possible.

A: Given query is to simplify the expression.

Q: X2 - x -  6 = -6

A: To solve:x2-x-6=-6

Q: 5x+32=-20x+48

A: We will use simple algebra to find the value of x.

Q: When you are asked to find the coefficients of 4c + 4b should you put 4,4 or just write 4 once…

A: Coefficient is the constant value with a variable in a expression.

Q: x2+9x=-14

A: Given equation is x2+9x=-14 The equation can be solved by splitting the middle term.…

Q: 3+7r>59 or -6r-3>33

A:

Q: Divide (3ど+19x+80: (x45)

A:

Q: -7+2(-4x+20)+12x

A: Consider the given expression: Here the objective is to simplify the given expression

Q: -23+3k>-5

A: Given that  -23+3k>-5 To solve the above expression.

Q: 14. 2r + 5 x + 10 22 16

A: Find x

Q: Subtract 3x2 + 8x from -9x² + 3x – 8.

A: topic - subtraction similar terms are subtracted .

Q: 6х12-2хго)

A:

Q: 3x + 5 = -5x + 3 ×=

A:

Q: perform suntraction  (5m2+7mp-2p2) - (-9m2-3mp-7p2) simplify your answer

A:

Q: Evaluate x2 - 6x + 3, for x = 7

A: We have to evaluate x2-6x+3 for x=7. Let Px=x2-6x+3 Now, at x=7 P7=72-6·7+3=49-42+3=52-42=10

Q: Evaluate (4r +1) dr -2

A:

Q: x2+9x=-14

A:

Q: x2+16x=?

A: factorization of quadratic

Q: 3x + 6 + for x =4

A: Given that  3x+6 at x=4

Q: After substituting, combine like terms 2x and 6x.

A: 2x+6x=8x

Q: 4+2x

A: