Question

factor completely

a^2-2ab-15b^2

how do you do this?

Answer 1

(a-b)^2 - 14b^2 = \[((a-b)^2+ \sqrt{14}b)((a-b)^2+ \sqrt{14} b)\]

Answer 2

i still dont see it ):

Answer 3

sry did it incorrectly
\[a ^{2}- 2ab + b ^{2} -16 b ^{2}\]
= \[(a-b)^{2} -(4b)^{2}\]
= \[(a - b -4b)(a-b+4b) = (a-5b)(a+3b)\]

Answer 4

another method \[a ^{2}-5ab +3ab - 15b ^{2} = a(a-5b) -3b(a-5b)= (a-5b)(a-3b)\]

Answer 5

does it help ???

Answer 6

yes i see it now Thank youuu !!!!!

Answer 7

u r welcome