Question

x minus 4 whole square + 5 square is equal to 30 square

Answer 1

Hi mate!!!

LHS:

(X-4)^2+5

X^2-2(x)(4)+4^2+5

X^2-8x+16+5

X^2-8x+21

Answer 2

LET ,

(X-4)^2=x^2-8x+16

So,x^2-8x+16+25=169

X^2-8x+41-169

X^2-8x-128=o

X^2-16x+8x-128=o

X(x-16) +8(x-16)=o

(X+8)or (x-16)=o

X=-8 or x=16