How do you factor $4a^2 - 5ab$ ?

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Answer 1 · 2017-10-02T17:39:43

$a(4a-5b)$

To factor a number or expression means to write it as the product of its prime factors.

In Algebra, always check for a common factor first.

$4a^2-5ab" "larr HCF = a$

Divide $a$ out of each term:

$= a(4a-5b)" "larr$ there are now 2 factors

Answer 2 · 2017-10-02T17:40:24

$a(4a-5b)$

$"there is a "color(blue)"common factor ""of a in both terms"$
$"which can be taken out"$

$rArr4a^2-5ab=a(4a-5b)larr" factored form"$

How do you factor 4a^2 - 5ab 4a^2 - 5ab ?