Question

16a2-25/4b2 factorise

Answer 1

Step-by-step explanation:

$16 {a}^{2} - \frac{25}{4 {b}^{2} } =(4a)^{2} - ( \frac{5}{2b} )^{2}$

$(4a - \frac{5}{2b} )(4a + \frac{5}{2b} )$

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Answer 2

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$16a²-\dfrac{25}{4b²}$

$=16a²b-\dfrac{b}{16a²}$

$=100(x+y)² - 81(a+b)²$

$=(x-1)²-(x-2)²$