MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Linear Equation in 2 Variables

Evaluate : ...

Question

Evaluate : $(b - 7)^{2}$

Open in App

Solution

$(b - 7)^{2} = b^{2} + 49 - 14 b = b^{2} - 14 b + 49 [∵ (x - y)^{2} = x^{2} + y^{2} - 2 x y]$

Suggest Corrections

thumbs-up

2

Similar questions

72 \div 3 \times 4 o f 6

Q. Evaluate : (a)

\frac{sin 18^{\circ}}{cos 72}

c o s e c 31^{\circ} - sec 59^{\circ}

{cos}^{2} 72^{\circ} - {sin}^{2} 54^{\circ}

100 - 72 + 8 + 4 \times 3

\frac{x + 1}{5} - \frac{x - 7}{2} = 1

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Linear Equation in 2 Variables

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Linear Equation in 2 Variables

Standard IX Mathematics

Join BYJU'S Learning Program

CrossIcon