Question

factorise 4a^2-12a+9-4ab^2

Answer 1

$4a^2 -12a + 9 -4ab^2$

$(2a)^2 + 9 - 12a - 4ab^2$

$(2a)^2 + (3)^2 - 12a -4ab^2$

$(2a)^2 + (3)^2 - 2(2a * 3) -4ab^2$

$(2a - 3)^2 -4ab^2$





i hope this will help you




-by ABHAY

Answer 2

hye

====================================

=>$4a^{2} -12a +9 -4ab^{2}$

lets convert the numbers into squres

=>we know that

=>4=2²
=>9 = 3²

=>(2a)² -12a + 3² - 4ab²


12 a is actaully

=>2(2a×3)

=>(2a×3)²

$(2a)^{2} - (2a*3) ^{2} +3 ^{2} -4ab^{2}$


=>(2a - 3)² - 4 ab²

=============================

hope it helps u...........