What is the value of z so that -9 and 9 are both solutipns fo x^2+z=103

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

happy to

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