Answer:
b. a+4 × a² + 6a + 5
a² + 7a + 10 a² + 5a + 4
= a+4 × (a+5)(a+1)
(a+5)(a+2) (a+4)(a+1)
= a + 2
2. 9m - 4 + 3m + 8
8 8
= 9m - 4 + 3m + 8
8
= 12m + 4
= 4(3m+1)
= 3m + 1
2
3. 4x² - 49
2x - 7 2x-7
= 4x² - 49
2x-7
= (2x - 7)(2x - 7)
2x - 7
= 2x - 7
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Answers & Comments
Answer:
b. a+4 × a² + 6a + 5
a² + 7a + 10 a² + 5a + 4
= a+4 × (a+5)(a+1)
(a+5)(a+2) (a+4)(a+1)
= a + 2
2. 9m - 4 + 3m + 8
8 8
= 9m - 4 + 3m + 8
8
= 12m + 4
8
= 4(3m+1)
8
= 3m + 1
2
3. 4x² - 49
2x - 7 2x-7
= 4x² - 49
2x-7
= (2x - 7)(2x - 7)
2x - 7
= 2x - 7