starlipika starlipika

01-03-2019
Mathematics

contestada

i keep getting stuck on these kind of questions, do i expand or try and factorise more???

i keep getting stuck on these kind of questions do i expand or try and factorise more class=

Respuesta :

jdoe0001 jdoe0001

01-03-2019

[tex]\bf \begin{array}{llll} (a^2+4)^2&-&(a^2-2)^2\\\\ a^4+8a^2+16&-&(a^4-2a^2+4)\\\\ a^4+8a^2+16&-&a^4+2a^2-4 \end{array} \\\\\\ a^4-a^4+8a^2+2a^2+16-4 \\\\\\ 10a^2+12[/tex]

expand, thus you can sum like-terms if any.

Answer Link

xzervisx xzervisx

28-03-2019

Answer:

10a^2+12

Step-by-step explanation:

Just use multiple indicies

Answer Link

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