Answer:
Whole to Parts The factors of the following polynomials are given below
4x² - 9
'RE
(2x - 7)
(x - 9)
(5x - 1)
(4x - 9y) (9x + 20y2)
(9x - 2072)
(4x + gy)
(2x + 7)
(5x + 1)
(x + 9)
1.x²- 81
2.4x²- 49
3.16x²- 81y²
4.25x²- 1
5.81x²- 400y⁴
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Answers & Comments
Answer:
Whole to Parts The factors of the following polynomials are given below
4x² - 9
'RE
(2x - 7)
(x - 9)
(5x - 1)
(4x - 9y) (9x + 20y2)
(9x - 2072)
(4x + gy)
(2x + 7)
(5x + 1)
(x + 9)
1.x²- 81
2.4x²- 49
3.16x²- 81y²
4.25x²- 1
5.81x²- 400y⁴
USING FOIL METHOD
(x-9) (x+9)
= x²+9x-9x-81
= x²-81 (+9-9=0, so the answer is..as well as the other number questions below)
2. 4x²-49
(2x-7) (2x+7)
= 4x²- 7x +7x-49
= 4x²-49
3. 16x²-81y
(4x+9y)(4x-9y)
=16x²-36xy+36xy-81y
=16x²-81y
4. 25x²-1
(5x-1) (5x+1)
= 25x²+5x-5x-1
=25x²-1
5. 81x²-400y^4
(9x+20y²)(9x-20y²)
= 81x²-180xy²+180xy²-400y^4
= 81x²-400y^4