Question

expand using identities (a-11b) square​

Answer 1

Question:

Expand using identities  $(a-11b)^2$

Given:

$(a-11b)^2$

To Find:

$(a-11b)^2$

Identity Used:

$(x-y)}^2=x^2+y^2-2xy$

Solution:

$(a-11b)^2\\\\\\\textsf{Using the identity (x-y)}^2=x^2+y^2-2xy\\\\\\x=a\\\\\\y=11b\\\\\\a^2+(11b)^2-2(a\times11b)\\\\\\a^2+121b^2-22ab\\\\\\ (a-11b)^2=a^2+121b^2-22ab\\\\\\\boxed{ (a-11b)^2=a^2+121b^2-22ab}$

Answer:

• (a-11b)²=a²+121b²-22ab

• $(a-11b)^2=a^2+121b^2-22ab$