Rectangle ABCD has sides 2x+5 and x+2 with rectangle EFGH of sides x+3 and x cut out of it. The total area of shape ABCD is 5cm^2. Show that 0 = x^2 + 6x +5 [5 Marks]

Area of ABCD = (2x+5)(x+2) = 2x2 +9x +10Area of EFGH = (x+3)(x) = x2 + 3xTotal Area = 5 = ABCD - EFGH = 2x2 +9x +10 - x2 - 3x 5 = x2 + 6x +10 0 = x2 + 6x +5(Follow up question could be to find x, either by factorising above equation or using the quadratic formula)

Answered by Arad S. Maths tutor

2607 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Rearranging Formulae


y = (x + 2)(x + 5)


What is the best way to revise in preparation for GCSE maths.


What's the quadratic formula used for?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences