The height of a triangle is 7 cm longer than its base. The area of the triangle is 60 cm2.
What is the base of the triangle?
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the base of the triangle is 8 cm

Step-by-step explanation: ⇒ cm²

Substitute the given values in [1] we have;

Multiply both sides by 2 we have;

or

⇒

Now factorize this equations:

⇒

⇒

By zero product property we have;

b-8 = 0 and b+15 = 0

⇒b = 8 and b = -15

Since, the base of the triangle cannot be in negative.

⇒b = 8 cm

Therefore, the base of the triangle is 8 cm

Base = b

height =h = b+7

Area = 1/2 * b* h

60 = 1/2*b*(b+7)

120 =b2+7b

b2+7b-120=0

(b+15)(b-8) =0

b=-15 and b=8

base cannot be negative

so base =b =8 cm

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2nd one in the first row is correct

a - base

b - exponent

so,