expand (2x+3)2 and (3x-5)2
Answers
Answered by
1
Step-by-step explanation:
1.4x²+2(2x)(3)+9
4x²+12x+9
2.9x²-2(3x)(5)+25
9x²-30x+25
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Answered by
1
Answer:
(2x + 3)² = 4x² + 12x + 9
(3x - 5)² = 9x² - 30x + 25
Identity used:
(a + b)² = a² + 2ab + b²
(a - b)² = a² - 2ab + b²
Step-by-step explanation:
(2x + 3)² = (2x)² + 2(2x)(3) + 3²
= 4x² + 12x + 9
(3x - 5)² = (3x)² - 2(3x)(5) + 5²
= 9x² - 30x + 25
Hope it helps!!!
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