Wednesday

October 1, 2014

October 1, 2014

Posted by **Joy** on Tuesday, January 20, 2009 at 11:20pm.

{ this means squared

1.3{2 + 4{2 Answer: 7{2

2. 8{3 + 3{3 Answer: 11{3

3. 7{5 - 3{5 Answer: 4{5

4. 8{2 - 5{2 Answer: 3{2

5. 6{x + 7{x Answer: 13{x

6. 9{y + 3{y Answer: 12{y

Multiply

7. -3x^2(4x^2-3x-5) Answer: 12x^2

8.(3b+5)(b-3) Answer: 3b^2-4b-15

9.(6a^2-2)(a^2-1) Answer: -2a^2+2

10. (3p-2)(3p+2) Answer: 9p^2-4

11. (3x^2+4)(3x^2-4) Answer:9x^2-16

12. (x-9)^2 Answer: x^2-18x+81

13. (4x+3)(4x-3) Answer: 16x^2-9

14. (3x^2-2x)^2 Answer: -3x^2+4x

If I got any wrong, can someone please show me how to do them correctly?

- 8th Grade Algebra: Answer Check #2 -
**Reiny**, Tuesday, January 20, 2009 at 11:27pmcheck # 7,9,14

#7 is way off, there should have been 3 terms.

do those again.

- 8th Grade Algebra: Answer Check #2 -
**Joy**, Tuesday, January 20, 2009 at 11:39pmI am really lost on all of those 3 problems.

Help please?

- 8th Grade Algebra: Answer Check #2 -
**Reiny**, Tuesday, January 20, 2009 at 11:48pm#7

-3x^2(4x^2-3x-5) just expand

= -12x^4 + 9x^3 + 15x^2

#9

(6a^2-2)(a^2-1)

= 6a^4 - 6a^2 - 2a^2 + 2

= 6a^4 - 8a^2 + 2

#14

(3x^2-2x)^2

= (3x^2 - 2x)(3x^2 - 2x)

= 9x^4 - 6x^3 - 6x^3 + 4x^2

= 9x^4 - 12x^3 + 4x^2

- 8th Grade Algebra: Answer Check #2 -
**Joy**, Wednesday, January 21, 2009 at 12:20amOHHH now I get it!

thank you very much!

- 8th Grade Algebra: Answer Check #2 -
**kim**, Tuesday, April 7, 2009 at 4:46pmy=x2+-24

- 8th Grade Algebra: Answer Check #2 -
**kim**, Tuesday, April 7, 2009 at 4:47pmcan u hlep me

- 8th Grade Algebra: Answer Check #2 -

**Answer this Question**

**Related Questions**

8th Grade Algebra-Radicals:Answer Check - Write each expression in simplest form...

8th Grade Algebra-Radicals:Answer Check - Change each decimal to a fraction in ...

8th Grade Algebra: Answer Check - Find the length of the 3rd side of each right ...

8th Grade Algebra-Radicals:Answer Check - 4. 311 + 411 Answer: 811 7. 72...

8th Grade Algebra-Answer Check - Write each decimal as a fraction in lowest ...

Matt 115 - Hello, I just wanted to know if someone could check my work to see if...

Algebra 1--Please, check my answer! - Add or subtract. Simplify your answer. 1...

math - can someone check this for me 11)Subtract 5/6 -3/5 My answer: .23 12)Add ...

8th Grade Algebra:Radicals - { this means means square root How do you solve ...

8th Grade Algebra- Answer Check - Solve each system of equations, give the ...