9x²+12x+4-16y² factorise
Answers
Answered by
20
Answer:
(3x+2+4y)(3x+2-4y)
Step-by-step explanation:
(9x²+12x+4) - 16y²=0
=
(9x²+(6+6)x+4) - (4y)²=0
=
3x(3x+2) +2(3x+2) - (4y)²=0
=
(3x+2)² - (4y)²=0
=
(3x+2+4y)(3x+2-4y)
hope it helped
Answered by
7
Answer:
= 9x² - 12x - 16y² + 4
= 9x² - 12x + 4 - 16y²
= (9x² - 12x + 4) - (16y²)
(3x - 2)² - (4y)² → you recognize: a² - b² = (a + b)(a - b)
[(3x - 2) + (4y)] * [(3x - 2) - (4y)]
= (3x - 2 + 4y)(3x - 2 - 4y)
= (3x + 4y - 2)(3x - 4y - 2)
Step-by-step explanation:
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