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Oksana_A [137]
3 years ago
13

A rectangle Is (2x-3) cm long and (x+7) cm wide. What Is It's area?​

Mathematics
2 answers:
krok68 [10]3 years ago
6 0

Answer:

2x^{2} + 11x -21 cm^{2}

Step-by-step explanation:

Area of a rectangle = Length × Width

= (2x-3)(x+7)

Multiply 2x with x, 2x with +7, -3 with x and -3 with +7

= 2x^{2} + 14x - 3x - 21

= 2x^{2} + 11x -21 cm^{2}

Nikitich [7]3 years ago
4 0

Answer:

Step-by-step explanation:

Length (L)= 2x - 3 cm

Breadth (b) = x + 7 cm

Area of the rectangle

= L * b

= ( 2x - 3)(x+ 7)

= 2x(x + 7) - 3(x + 7)

= 2x² + 14x  - 3x - 21

=( 2x² + 11x - 21) cm²

hope it helps

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