Question

Class 8 exercise 11.2 question number 6

Answer 1

${ab}^{2} \: + (a - 1)b - 1$
${ab}^{2} + ab - b - 1$


$ab( {b}^{} - 1) - 1(b - 1)$
$(ab - 1)(b - 1)$

Answer 2

Area of rhombus=base×altitude
=(6×4)cm^2
=24cm^2
Area of rhombus=1/2×d1×d2=24cm^2
=1/2×8×d2=24
4×d2=24
d2=24/4)cm
diagonal2=6cm