Question

Factorise the following expressions. r? + 8x + 16​

Answer 1

Answer:

2X

Step-by-step explanation:

Answer 2

Answer:

(i)a2+8a+16

a2+2(4a)+(4)2

=(a+4)2

(ii) p2-10p+25

p2-5p-5p+25

=p(p-5)-5(p-5)

=(p-5)2

(iii)25m2+30m+9

=(5m)2+2(5m)3+(3)2

=(5m+3)2

(iv) 49y2+84yz+36z2

=(7y)2+2(6)(7)yz+(6z)2

=(7y+6z)2

(v) 4x2-8x+4

(2x)2-2(2)(2)x+(2)2

=(2x+2)2

(vi) 121b2-88bc+16c2

(11b)2-2(11)(4)bc+(4c)2

=(11b-4c)2

(vii) (l+m)2-4lm

=l2+m2+2lm-4lm

=(l)2+(m)2-2lm

=(l-m)2

(viii) a4+2a2b2+b4

(a2)2+2(a2)(b2)+(b2)2

(a2+b2)2

Step-by-step explanation:

hope it helps you.. :)